diff --git a/.gitignore b/.gitignore
index 67144ab1..64ac19ad 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,4 +10,4 @@ dist
 venv/
 desktop.ini
 thumbs.db
-
+temp/
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 9f043a28..14183a63 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,5 +1,35 @@
 # Change Log
 
+## [0.3](https://github.com/formatc1702/WireViz/tree/v0.3) (2021-10-11)
+
+### New features
+
+- Allow referencing a cable's/bundle's wires by color or by label ([#70](https://github.com/formatc1702/WireViz/issues/70), [#169](https://github.com/formatc1702/WireViz/issues/169), [#193](https://github.com/formatc1702/WireViz/issues/193), [#194](https://github.com/formatc1702/WireViz/pull/194))
+- Allow additional BOM items within components ([#50](https://github.com/formatc1702/WireViz/issues/50), [#115](https://github.com/formatc1702/WireViz/pull/115))
+- Add support for length units in cables and wires ([#7](https://github.com/formatc1702/WireViz/issues/7), [#196](https://github.com/formatc1702/WireViz/pull/196) (with work from [#161](https://github.com/formatc1702/WireViz/pull/161), [#162](https://github.com/formatc1702/WireViz/pull/162), [#171](https://github.com/formatc1702/WireViz/pull/171)), [#198](https://github.com/formatc1702/WireViz/pull/198), [#205](https://github.com/formatc1702/WireViz/issues/205). [#206](https://github.com/formatc1702/WireViz/pull/206))
+- Add option to define connector pin colors ([#53](https://github.com/formatc1702/WireViz/issues/53), [#141](https://github.com/formatc1702/WireViz/pull/141))
+- Remove HTML links from the input attributes ([#164](https://github.com/formatc1702/WireViz/pull/164))
+- Add harness metadata section ([#158](https://github.com/formatc1702/WireViz/issues/158), [#214](https://github.com/formatc1702/WireViz/pull/214))
+- Add support for supplier and supplier part number information ([#240](https://github.com/formatc1702/WireViz/issues/240), [#241](https://github.com/formatc1702/WireViz/pull/241/))
+- Add graph rendering options (colors, font, color name display style, ...) ([#158](https://github.com/formatc1702/WireViz/issues/158), [#214](https://github.com/formatc1702/WireViz/pull/214))
+- Add support for background colors for cables and connectors, as well as for some individual cells ([#210](https://github.com/formatc1702/WireViz/issues/210), [#219](https://github.com/formatc1702/WireViz/pull/219))
+- Add optional tweaking of the .gv output ([#215](https://github.com/formatc1702/WireViz/pull/215)) (experimental)
+
+
+## Misc. fixes
+
+- Remove case-sensitivity issues with pin names and labels ([#160](https://github.com/formatc1702/WireViz/issues/160), [#229](https://github.com/formatc1702/WireViz/pull/229))
+- Improve type hinting ([#156](https://github.com/formatc1702/WireViz/issues/156), [#163](https://github.com/formatc1702/WireViz/pull/163))
+- Move BOM management and HTML functions to separate modules ([#151](https://github.com/formatc1702/WireViz/issues/151), [#192](https://github.com/formatc1702/WireViz/pull/192))
+- Simplify BOM code ([#197](https://github.com/formatc1702/WireViz/pull/197))
+- Bug fixes ([#218](https://github.com/formatc1702/WireViz/pull/218), [#221](https://github.com/formatc1702/WireViz/pull/221))
+
+## Known issues
+
+- Including images in the harness may lead to issues in the following cases: ([#189](https://github.com/formatc1702/WireViz/pull/189), [#220](https://github.com/formatc1702/WireViz/issues/220))
+  - When using the `-o`/`--output_file` CLI option, specifying an output path in a different directory from the input file
+  - When using the `--prepend-file` CLI option, specifying a prepend file in a different directory from the mail input file
+
 ## [0.2](https://github.com/formatc1702/WireViz/tree/v0.2) (2020-10-17)
 
 ### Backward incompatible changes
@@ -16,6 +46,7 @@ See the [syntax description](syntax.md) for details.
 
 
 ### New features
+
 - Add bidirectional AWG/mm2 conversion ([#40](https://github.com/formatc1702/WireViz/issues/40), [#41](https://github.com/formatc1702/WireViz/pull/41))
 - Add support for part numbers ([#11](https://github.com/formatc1702/WireViz/pull/11), [#114](https://github.com/formatc1702/WireViz/issues/114), [#121](https://github.com/formatc1702/WireViz/pull/121))
 - Add support for multicolored wires ([#12](https://github.com/formatc1702/WireViz/issues/12), [#17](https://github.com/formatc1702/WireViz/pull/17), [#96](https://github.com/formatc1702/WireViz/pull/96), [#131](https://github.com/formatc1702/WireViz/issues/131), [#132](https://github.com/formatc1702/WireViz/pull/132))
diff --git a/docs/CONTRIBUTING.md b/docs/CONTRIBUTING.md
index b11c0696..a0b3a0e7 100644
--- a/docs/CONTRIBUTING.md
+++ b/docs/CONTRIBUTING.md
@@ -26,6 +26,7 @@ When contributing to this repository, please [submit a new issue](https://github
 1. Commit your code changes to this feature branch.
 1. Push the changes to your fork.
 1. Submit a new pull request, using `dev` as the base branch.
+  - If your code changes or extends the WireViz YAML syntax, be sure to update the [syntax description document](https://github.com/formatc1702/WireViz/blob/dev/docs/syntax.md) in your PR.
 1. Please include in the PR description (and optionally also in the commit message body) a reference (# followed by issue number) to the issue where the suggested changes are discussed.
 
 ### Hints
diff --git a/docs/syntax.md b/docs/syntax.md
index a0a30c27..8da04aee 100644
--- a/docs/syntax.md
+++ b/docs/syntax.md
@@ -29,8 +29,17 @@ additional_bom_items:  # custom items to add to BOM
   - <bom-item>           # BOM item (see below)
   ...
 
-```
+metadata:  # dictionary of meta-information describing the harness
+  <key>   : <value>  # any number of key value pairs (see below)
+  ...
 
+options:  # dictionary of common attributes for the whole harness
+  <str>   : <value>  # optional harness attributes (see below)
+  ...
+
+tweak:  # optional tweaking of .gv output
+  ...
+```
 ## Connector attributes
 
 ```yaml
@@ -43,9 +52,14 @@ additional_bom_items:  # custom items to add to BOM
   notes: <str>   
 
   # product information (all optional)
-  pn: <str>            # [internal] part number
-  mpn: <str>           # manufacturer part number
-  manufacturer: <str>  # manufacturer name
+  ignore_in_bom: <bool>  # if set to true the connector is not added to the BOM
+  pn: <str>              # [internal] part number
+  manufacturer: <str>    # manufacturer name
+  mpn: <str>             # manufacturer part number
+  supplier: <str>        # supplier name
+  spn: <str>             # supplier part number
+  additional_components: # additional components
+    - <additional-component> # additional component (see below)
 
   # pinout information
   # at least one of the following must be specified
@@ -53,7 +67,14 @@ additional_bom_items:  # custom items to add to BOM
   pins: <List>       # if omitted, is autofilled with [1, 2, ..., pincount]
   pinlabels: <List>  # if omitted, is autofilled with blanks
 
+  # pin color marks (optional)
+  pincolors: <List>  # list of colors to be assigned to the respective pins;
+                     # if list length is lower than connector pinout,
+                     # no color marks will be added to remaining pins
+
   # rendering information (all optional)
+  bgcolor: <color>       # Background color of diagram connector box
+  bgcolor_title: <color> # Background color of title in diagram connector box
   style: <style>         # may be set to simple for single pin connectors
   show_name: <bool>      # defaults to true for regular connectors,
                          # false for simple connectors
@@ -98,19 +119,28 @@ Since the auto-incremented and auto-assigned designator is not known to the user
                           #                  but unavailable for auto-conversion
   show_equiv: <bool>      # defaults to false; can auto-convert between mm2 and AWG
                           # and display the result when set to true
-  length: <int/float>     # is assumed to be in meters
-  shield: <bool/color>    # defaults to false
-                          # setting to true will display the shield as a thin black line
-                          # using a color (see below) will render the shield in that color
-                          # using 's' as the wire number
+  length: <int/float>[ <unit>]  # <int/float> is assumed to be in meters unless <unit> is specified
+                                # e.g. length: 2.5 -> assumed to be 2.5 m
+                                # or   length: 2.5 ft -> "ft" is used as the unit
+                                # Units are not converted during BOM generation;
+                                # different units result in separate BOM entries.
+  shield: <bool/color>  # defaults to false
+                        # setting to true will display the shield as a thin black line
+                        # using a color (see below) will render the shield in that color
+                        # A shield can be accessed by using 's' as the wire ID
   color: <color>  # see below
   image: <image>  # see below
   notes: <str>   
 
   # product information (all optional)
-  pn: <str>            # [internal] part number
-  mpn: <str>           # manufacturer part number
-  manufacturer: <str>  # manufacturer name
+  ignore_in_bom: <bool>  # if set to true the cable or wires are not added to the BOM
+  pn: <str>              # [internal] part number
+  manufacturer: <str>    # manufacturer name
+  mpn: <str>             # manufacturer part number
+  supplier: <str>        # supplier name
+  spn: <str>             # supplier part number
+  additional_components: # additional components
+    - <additional-component> # additional component (see below)
 
   # conductor information
   # the following combinations are permitted:
@@ -123,9 +153,14 @@ Since the auto-incremented and auto-assigned designator is not known to the user
   colors: <List>     # list of colors (see below)
   color_code: <str>  # one of the supported cable color codes (see below)
 
+  wirelabels: <List>  # optional; one label for each wire
+
   # rendering information (all optional)
-  show_name: <bool>       # defaults to true
-  show_wirecount: <bool>  # defaults to true
+  bgcolor: <color>          # Background color of diagram cable box
+  bgcolor_title: <color>    # Background color of title in diagram cable box
+  show_name: <bool>         # defaults to true
+  show_wirecount: <bool>    # defaults to true
+  show_wirenumbers: <bool>  # defaults to true for cables; false for bundles
 
 ```
 
@@ -162,6 +197,8 @@ connections:
 - The maximum number of items is unlimited.
 - Items must alternatingly belong to the `connectors` and the `cables` sections.
 - When a connection set defines multiple parallel connections, the number of specified `<pin>`s and `<wire>`s for each component in the set must match. When specifying only one designator, one is auto-generated for each connection of the set.
+- `<pin>` may reference a pin's unique ID (as per the connector's `pins` attribute, auto-numbered from 1 by default) or its label (as per `pinlabels`).
+- `<wire>` may reference a wire's number within a cable/bundle, its label (as per `wirelabels`) or, if unambiguous, its color.
 
 ### Single connections
 
@@ -210,34 +247,130 @@ For connectors with `autogenerate: true`, a new instance, with auto-generated de
 
   - `<int>` to refer to a specific wire, using its number.
   - `<int>-<int>` auto-expands to a range.
+  - `<str>` to refer to a wire's label or color, if unambiguous.
 
 
-## BOM items
 
-Connectors (both regular, and auto-generated), cables, and wires of a bundle are automatically added to the BOM.
+## Metadata entries
 
-<!-- unless the `ignore_in_bom` attribute is set to `true` (#115) -->
+```yaml
+  # Meta-information describing the harness
+
+  # Each key/value pair replaces all key references in
+  # the HTML output template with the belonging value.
+  # Typical keys are 'title', 'description', and 'notes',
+  # but any key is accepted. Unused keys are ignored.
+  <key>   : <value>  # Any valid YAML syntax is accepted
+  # If no value is specified for 'title', then the
+  # output filename without extension is used.
+```
+
+## Options
+
+```yaml
+  # Common attributes for the whole harness.
+  # All entries are optional and have default values.
+
+  # Background color of diagram and HTML output
+  bgcolor: <color>             # Default = 'WH'
+
+  # Background color of other diagram elements
+  bgcolor_node: <color>        # Default = 'WH'
+  bgcolor_connector: <color>   # Default = bgcolor_node
+  bgcolor_cable: <color>       # Default = bgcolor_node
+  bgcolor_bundle: <color>      # Default = bgcolor_cable
+
+  # How to display colors as text in the diagram
+  # 'full' : Lowercase full color name
+  # 'FULL' : Uppercase full color name
+  # 'hex'  : Lowercase hexadecimal values
+  # 'HEX'  : Uppercase hexadecimal values
+  # 'short': Lowercase short color name
+  # 'SHORT': Uppercase short color name
+  # 'ger'  : Lowercase short German color name
+  # 'GER'  : Uppercase short German color name
+  color_mode: <str>            # Default = 'SHORT'
+
+  # Fontname to use in diagram and HTML output
+  fontname: <str>              # Default = 'arial'
+
+  # If True, show only a BOM entry reference together with basic info
+  # about additional components inside the diagram node (connector/cable box).
+  # If False, show all info about additional components inside the diagram node.
+  mini_bom_mode: <bool>        # Default = True
+```
 
-Additional BOM entries can be generated in the sections marked `<bom-item>` above.
+## BOM items and additional components
 
-<!-- BOM items inside connectors/cables are not implemented yet, but should be soon (#50) -->
+Connectors (both regular, and auto-generated), cables, and wires of a bundle are automatically added to the BOM,
+unless the `ignore_in_bom` attribute is set to `true`.
+Additional items can be added to the BOM as either part of a connector or cable or on their own.
+
+Parts can be added to a connector or cable in the section `<additional-component>` which will also list them in the graph.
+
+```yaml
+-
+  type: <str>  # type of additional component
+  # all the following are optional:
+  subtype: <str>  # additional description (only shown in bom)
+  qty: <int/float>  # qty to add to the bom (defaults to 1)
+  qty_multiplier: <str>  # multiplies qty by a feature of the parent component
+                  # when used in a connector:
+                  # pincount         number of pins of connector
+                  # populated        number of populated positions in a connector
+                  # when used in a cable:
+                  # wirecount        number of wires of cable/bundle
+                  # terminations     number of terminations on a cable/bundle
+                  # length           length of cable/bundle
+                  # total_length     sum of lengths of each wire in the bundle
+  unit: <str>
+  pn: <str>            # [internal] part number
+  manufacturer: <str>  # manufacturer name  
+  mpn: <str>           # manufacturer part number
+  supplier: <str>      # supplier name  
+  spn: <str>           # supplier part number
+  bgcolor: <color>     # Background color of entry in diagram component box
+```
+
+Alternatively items can be added to just the BOM by putting them in the section `<bom-item>` above.
 
 ```yaml
 -
   description: <str>              
-  qty: <int/str>  # when used in the additional_bom_items section:
-                  # <int>            manually specify qty.
-                  # when used within a component:
-                  # <int>            manually specify qty.
-                  # pincount         match number of pins of connector
-                  # wirecount        match number of wires of cable/bundle
-                  # connectioncount  match number of connected pins
   # all the following are optional:
+  qty: <int/float>  # qty to add to the bom (defaults to 1)
   unit: <str>   
   designators: <List>
   pn: <str>            # [internal] part number
-  mpn: <str>           # manufacturer part number
   manufacturer: <str>  # manufacturer name  
+  mpn: <str>           # manufacturer part number
+  supplier: <str>      # supplier name  
+  spn: <str>           # supplier part number
+```
+
+## GraphViz tweaking (experimental)
+
+```yaml
+  # Optional tweaking of the .gv output.
+  # This feature is experimental and might change
+  # or be removed in future versions.
+
+  override:  # dict of .gv entries to override
+    # Each entry is identified by its leading string
+    # in lines beginning with a TAB character.
+    # The leading string might be in "quotes" in
+    # the .gv output. This leading string must be
+    # followed by attributes in [square brackets].
+    # Entries with an attribute containing HTML are
+    # not supported.
+    <str>:  # leading string of .gv entry
+      <str> : <str/null>  # attribute and its new value
+      # Any number of attributes can be overridden
+      # for each entry. Attributes not already existing
+      # in the entry will be appended to the entry.
+      # Use null as new value to delete an attribute.
+
+  append: <str/list> # string or list of strings to append to the .gv output
 ```
 
 ## Colors
@@ -272,6 +405,9 @@ The following colors are understood:
 <!-- color list generated with a helper script: -->
 <!-- https://gist.github.com/formatc1702/3c93fb4c5e392364899283f78672b952 -->
 
+It is also possible to specify colors as hexadecimal RGB values, e.g. `#112233` or `#FFFF00:#009900`.
+Remember quoting strings containing a `#` in the YAML file.
+
 ## Cable color codes
 
 Supported color codes:
@@ -298,6 +434,7 @@ image:
   src: <path>        # path to the image file
   # optional parameters:
   caption: <str>     # text to display below the image
+  bgcolor: <color>   # Background color of entry in diagram component box
   width: <int>       # range: 1~65535; unit: points
   height: <int>      # range: 1~65535; unit: points
   # if only one dimension (width/height) is specified, the image is scaled proportionally.
@@ -315,7 +452,10 @@ The following attributes accept multiline strings:
 - `notes`
 - `manufacturer`
 - `mpn`
+- `supplier`
+- `spn`
 - `image.caption`
+- `tweak.append`
 
 ### Method 1
 
diff --git a/examples/demo01.bom.tsv b/examples/demo01.bom.tsv
index d7534107..39f82ac5 100644
--- a/examples/demo01.bom.tsv
+++ b/examples/demo01.bom.tsv
@@ -1,4 +1,4 @@
-Item	Qty	Unit	Designators
-Connector, D-Sub, female, 9 pins	1		X1
-Connector, Molex KK 254, female, 3 pins	1		X2
-Cable, 3 x 0.25 mm² shielded	0.2	m	W1
+Id	Description	Qty	Unit	Designators
+1	Cable, 3 x 0.25 mm² shielded	0.2	m	W1
+2	Connector, D-Sub, female, 9 pins	1		X1
+3	Connector, Molex KK 254, female, 3 pins	1		X2
diff --git a/examples/demo01.gv b/examples/demo01.gv
index ed4fa671..00653b5c 100644
--- a/examples/demo01.gv
+++ b/examples/demo01.gv
@@ -1,8 +1,8 @@
 graph {
-// Graph generated by WireViz 0.2
+// Graph generated by WireViz 0.3
 // https://github.com/formatc1702/WireViz
-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
+	node [fillcolor="#FFFFFF" fontname=arial height=0 margin=0 shape=none style=filled width=0]
 	edge [fontname=arial style=bold]
 	X1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
@@ -59,7 +59,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X2 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -91,7 +91,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#ffffff:#000000"]
 	X1:p5r:e -- W1:w1:w
 	W1:w1:e -- X2:p1l:w
@@ -122,9 +122,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:5</td>
-    <td>WH</td>
-    <td>X2:1</td>
+    <td>X1:5:GND</td>
+    <td>
+     1:WH
+    </td>
+    <td>X2:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -136,9 +138,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:2</td>
-    <td>BN</td>
-    <td>X2:3</td>
+    <td>X1:2:RX</td>
+    <td>
+     2:BN
+    </td>
+    <td>X2:3:TX</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -150,9 +154,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:3</td>
-    <td>GN</td>
-    <td>X2:2</td>
+    <td>X1:3:TX</td>
+    <td>
+     3:GN
+    </td>
+    <td>X2:2:RX</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w3" height="6">
@@ -165,7 +171,7 @@ graph {
    </tr>
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:5</td>
+    <td>X1:5:GND</td>
     <td>Shield</td>
     <td><!-- s_out --></td>
    </tr>
@@ -174,5 +180,5 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style=""]
+> fillcolor="#FFFFFF" shape=box style=filled]
 }
diff --git a/examples/demo01.html b/examples/demo01.html
index 383052f8..12d00299 100644
--- a/examples/demo01.html
+++ b/examples/demo01.html
@@ -1,177 +1,210 @@
 <!DOCTYPE html>
 <html lang="en"><head>
  <meta charset="UTF-8">
- <meta name="generator" content="WireViz 0.2 - https://github.com/formatc1702/WireViz">
- <title>WireViz Diagram and BOM</title>
-</head><body style="font-family:Arial">
-<h1>Diagram</h1><!-- XML and DOCTYPE declarations from SVG file removed -->
-<!-- Generated by graphviz version 2.44.1 (20200629.0846)
+ <meta name="generator" content="WireViz 0.3 - https://github.com/formatc1702/WireViz">
+ <title>demo01</title>
+</head><body style="font-family:arial;background-color:#FFFFFF">
+<h1>demo01</h1>
+<h2>Diagram</h2>
+<!-- XML and DOCTYPE declarations from SVG file removed -->
+<!-- Generated by graphviz version 2.49.0 (20210828.1703)
  -->
 <!-- Pages: 1 -->
-<svg width="777pt" height="291pt"
- viewBox="0.00 0.00 777.00 291.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<svg width="833pt" height="291pt"
+ viewBox="0.00 0.00 833.00 291.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
 <g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 287)">
-<polygon fill="white" stroke="transparent" points="-4,4 -4,-287 773,-287 773,4 -4,4"/>
+<polygon fill="#ffffff" stroke="transparent" points="-4,4 -4,-287 829,-287 829,4 -4,4"/>
 <!-- X1 -->
 <g id="node1" class="node">
 <title>X1</title>
-<polygon fill="white" stroke="transparent" points="136,-253 0,-253 0,0 136,0 136,-253"/>
-<polygon fill="none" stroke="black" points="0,-229.5 0,-252.5 136,-252.5 136,-229.5 0,-229.5"/>
-<text text-anchor="start" x="59.5" y="-237.3" font-family="arial" font-size="14.00">X1</text>
-<polygon fill="none" stroke="black" points="0,-206.5 0,-229.5 47,-229.5 47,-206.5 0,-206.5"/>
-<text text-anchor="start" x="4" y="-214.3" font-family="arial" font-size="14.00">D&#45;Sub</text>
-<polygon fill="none" stroke="black" points="47,-206.5 47,-229.5 97,-229.5 97,-206.5 47,-206.5"/>
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diff --git a/examples/demo02.bom.tsv b/examples/demo02.bom.tsv
index c71ca775..cebaa360 100644
--- a/examples/demo02.bom.tsv
+++ b/examples/demo02.bom.tsv
@@ -1,13 +1,13 @@
-Item	Qty	Unit	Designators
-Connector, Crimp ferrule, 0.25 mm², YE	2		
-Connector, Molex KK 254, female, 4 pins	2		X2, X3
-Connector, Molex KK 254, female, 5 pins	1		X4
-Connector, Molex KK 254, female, 8 pins	1		X1
-Cable, 2 x 0.25 mm²	0.3	m	W4
-Wire, 0.14 mm², BK	0.9	m	W1, W2, W3
-Wire, 0.14 mm², BU	0.3	m	W3
-Wire, 0.14 mm², GN	0.6	m	W1, W2
-Wire, 0.14 mm², OG	0.3	m	W3
-Wire, 0.14 mm², RD	0.6	m	W1, W2
-Wire, 0.14 mm², VT	0.3	m	W3
-Wire, 0.14 mm², YE	0.6	m	W1, W2
+Id	Description	Qty	Unit	Designators
+1	Cable, 2 x 0.25 mm²	0.3	m	W4
+2	Connector, Crimp ferrule, 0.25 mm², YE	2		
+3	Connector, Molex KK 254, female, 4 pins	2		X2, X3
+4	Connector, Molex KK 254, female, 5 pins	1		X4
+5	Connector, Molex KK 254, female, 8 pins	1		X1
+6	Wire, 0.14 mm², BK	0.9	m	W1, W2, W3
+7	Wire, 0.14 mm², BU	0.3	m	W3
+8	Wire, 0.14 mm², GN	0.6	m	W1, W2
+9	Wire, 0.14 mm², OG	0.3	m	W3
+10	Wire, 0.14 mm², RD	0.6	m	W1, W2
+11	Wire, 0.14 mm², VT	0.3	m	W3
+12	Wire, 0.14 mm², YE	0.6	m	W1, W2
diff --git a/examples/demo02.gv b/examples/demo02.gv
index 65905c39..80b789b3 100644
--- a/examples/demo02.gv
+++ b/examples/demo02.gv
@@ -1,8 +1,8 @@
 graph {
-// Graph generated by WireViz 0.2
+// Graph generated by WireViz 0.3
 // https://github.com/formatc1702/WireViz
-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
+	node [fillcolor="#FFFFFF" fontname=arial height=0 margin=0 shape=none style=filled width=0]
 	edge [fontname=arial style=bold]
 	X1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
@@ -55,7 +55,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X2 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -91,7 +91,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X3 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -127,7 +127,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X4 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -167,7 +167,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	_ferrule_crimp_1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -179,7 +179,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	_ferrule_crimp_2 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -191,7 +191,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#000000:#000000"]
 	X1:p1r:e -- W1:w1:w
 	W1:w1:e -- X2:p1l:w
@@ -222,9 +222,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:1</td>
-    <td>BK</td>
-    <td>X2:1</td>
+    <td>X1:1:GND</td>
+    <td>
+     BK
+    </td>
+    <td>X2:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -236,9 +238,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:2</td>
-    <td>RD</td>
-    <td>X2:2</td>
+    <td>X1:2:+5V</td>
+    <td>
+     RD
+    </td>
+    <td>X2:2:+5V</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -250,9 +254,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:3</td>
-    <td>YE</td>
-    <td>X2:3</td>
+    <td>X1:3:SCL</td>
+    <td>
+     YE
+    </td>
+    <td>X2:3:SCL</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w3" height="6">
@@ -264,9 +270,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:4</td>
-    <td>GN</td>
-    <td>X2:4</td>
+    <td>X1:4:SDA</td>
+    <td>
+     GN
+    </td>
+    <td>X2:4:SDA</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w4" height="6">
@@ -281,7 +289,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style="filled,dashed"]
+> fillcolor="#FFFFFF" shape=box style="filled,dashed"]
 	edge [color="#000000:#000000:#000000"]
 	X1:p1r:e -- W2:w1:w
 	W2:w1:e -- X3:p1l:w
@@ -312,9 +320,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:1</td>
-    <td>BK</td>
-    <td>X3:1</td>
+    <td>X1:1:GND</td>
+    <td>
+     BK
+    </td>
+    <td>X3:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -326,9 +336,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:2</td>
-    <td>RD</td>
-    <td>X3:2</td>
+    <td>X1:2:+5V</td>
+    <td>
+     RD
+    </td>
+    <td>X3:2:+5V</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -340,9 +352,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:3</td>
-    <td>YE</td>
-    <td>X3:3</td>
+    <td>X1:3:SCL</td>
+    <td>
+     YE
+    </td>
+    <td>X3:3:SCL</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w3" height="6">
@@ -354,9 +368,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:4</td>
-    <td>GN</td>
-    <td>X3:4</td>
+    <td>X1:4:SDA</td>
+    <td>
+     GN
+    </td>
+    <td>X3:4:SDA</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w4" height="6">
@@ -371,7 +387,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style="filled,dashed"]
+> fillcolor="#FFFFFF" shape=box style="filled,dashed"]
 	edge [color="#000000:#000000:#000000"]
 	X1:p1r:e -- W3:w1:w
 	W3:w1:e -- X4:p1l:w
@@ -402,9 +418,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:1</td>
-    <td>BK</td>
-    <td>X4:1</td>
+    <td>X1:1:GND</td>
+    <td>
+     BK
+    </td>
+    <td>X4:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -416,9 +434,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:5</td>
-    <td>BU</td>
-    <td>X4:3</td>
+    <td>X1:5:MISO</td>
+    <td>
+     BU
+    </td>
+    <td>X4:3:MISO</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -430,9 +450,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:6</td>
-    <td>OG</td>
-    <td>X4:4</td>
+    <td>X1:6:MOSI</td>
+    <td>
+     OG
+    </td>
+    <td>X4:4:MOSI</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w3" height="6">
@@ -444,9 +466,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:7</td>
-    <td>VT</td>
-    <td>X4:5</td>
+    <td>X1:7:SCK</td>
+    <td>
+     VT
+    </td>
+    <td>X4:5:SCK</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w4" height="6">
@@ -461,7 +485,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style="filled,dashed"]
+> fillcolor="#FFFFFF" shape=box style="filled,dashed"]
 	edge [color="#000000:#000000:#000000"]
 	_ferrule_crimp_1:e -- W4:w1:w
 	W4:w1:e -- X4:p1l:w
@@ -487,8 +511,10 @@ graph {
    <tr><td>&nbsp;</td></tr>
    <tr>
     <td></td>
-    <td>BK</td>
-    <td>X4:1</td>
+    <td>
+     1:BK
+    </td>
+    <td>X4:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -501,8 +527,10 @@ graph {
    </tr>
    <tr>
     <td></td>
-    <td>RD</td>
-    <td>X4:2</td>
+    <td>
+     2:RD
+    </td>
+    <td>X4:2:+12V</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -517,5 +545,5 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style=""]
+> fillcolor="#FFFFFF" shape=box style=filled]
 }
diff --git a/examples/demo02.html b/examples/demo02.html
index d8b70baf..56c2310b 100644
--- a/examples/demo02.html
+++ b/examples/demo02.html
@@ -1,517 +1,613 @@
 <!DOCTYPE html>
 <html lang="en"><head>
  <meta charset="UTF-8">
- <meta name="generator" content="WireViz 0.2 - https://github.com/formatc1702/WireViz">
- <title>WireViz Diagram and BOM</title>
-</head><body style="font-family:Arial">
-<h1>Diagram</h1><!-- XML and DOCTYPE declarations from SVG file removed -->
-<!-- Generated by graphviz version 2.44.1 (20200629.0846)
+ <meta name="generator" content="WireViz 0.3 - https://github.com/formatc1702/WireViz">
+ <title>demo02</title>
+</head><body style="font-family:arial;background-color:#FFFFFF">
+<h1>demo02</h1>
+<h2>Diagram</h2>
+<!-- XML and DOCTYPE declarations from SVG file removed -->
+<!-- Generated by graphviz version 2.49.0 (20210828.1703)
  -->
 <!-- Pages: 1 -->
-<svg width="865pt" height="779pt"
- viewBox="0.00 0.00 865.00 779.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
-<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 775)">
-<polygon fill="white" stroke="transparent" points="-4,4 -4,-775 861,-775 861,4 -4,4"/>
+<svg width="882pt" height="767pt"
+ viewBox="0.00 0.00 882.00 766.50" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 762.5)">
+<polygon fill="#ffffff" stroke="transparent" points="-4,4 -4,-762.5 878,-762.5 878,4 -4,4"/>
 <!-- X1 -->
 <g id="node1" class="node">
 <title>X1</title>
-<polygon fill="white" stroke="transparent" points="185.5,-530 3.5,-530 3.5,-300 185.5,-300 185.5,-530"/>
-<polygon fill="none" stroke="black" points="3.5,-507 3.5,-530 185.5,-530 185.5,-507 3.5,-507"/>
-<text text-anchor="start" x="86" y="-514.8" font-family="arial" font-size="14.00">X1</text>
-<polygon fill="none" stroke="black" points="3.5,-484 3.5,-507 96.5,-507 96.5,-484 3.5,-484"/>
-<text text-anchor="start" x="7.5" y="-491.8" font-family="arial" font-size="14.00">Molex KK 254</text>
-<polygon fill="none" stroke="black" points="96.5,-484 96.5,-507 146.5,-507 146.5,-484 96.5,-484"/>
-<text text-anchor="start" x="100.5" y="-491.8" font-family="arial" font-size="14.00">female</text>
-<polygon fill="none" stroke="black" points="146.5,-484 146.5,-507 185.5,-507 185.5,-484 146.5,-484"/>
-<text text-anchor="start" x="150.5" y="-491.8" font-family="arial" font-size="14.00">8&#45;pin</text>
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-<text text-anchor="start" x="41" y="-468.8" font-family="arial" font-size="14.00">GND</text>
-<polygon fill="none" stroke="black" points="109.5,-461 109.5,-484 185.5,-484 185.5,-461 109.5,-461"/>
-<text text-anchor="start" x="143.5" y="-468.8" font-family="arial" font-size="14.00">1</text>
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-<text text-anchor="start" x="44" y="-445.8" font-family="arial" font-size="14.00">+5V</text>
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-<text text-anchor="start" x="143.5" y="-445.8" font-family="arial" font-size="14.00">2</text>
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-<text text-anchor="start" x="43" y="-422.8" font-family="arial" font-size="14.00">SCL</text>
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-<text text-anchor="start" x="143.5" y="-422.8" font-family="arial" font-size="14.00">3</text>
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-<text text-anchor="start" x="42.5" y="-399.8" font-family="arial" font-size="14.00">SDA</text>
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-<text text-anchor="start" x="44.5" y="-307.8" font-family="arial" font-size="14.00">N/C</text>
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-<text text-anchor="start" x="143.5" y="-307.8" font-family="arial" font-size="14.00">8</text>
+<polygon fill="#ffffff" stroke="black" points="189.5,-517.5 2.5,-517.5 2.5,-287.5 189.5,-287.5 189.5,-517.5"/>
+<polygon fill="none" stroke="black" points="3,-494.5 3,-517.5 190,-517.5 190,-494.5 3,-494.5"/>
+<text text-anchor="start" x="87.5" y="-502.3" font-family="arial" font-size="14.00">X1</text>
+<polygon fill="none" stroke="black" points="3,-471.5 3,-494.5 99,-494.5 99,-471.5 3,-471.5"/>
+<text text-anchor="start" x="7" y="-479.3" font-family="arial" font-size="14.00">Molex KK 254</text>
+<polygon fill="none" stroke="black" points="99,-471.5 99,-494.5 150,-494.5 150,-471.5 99,-471.5"/>
+<text text-anchor="start" x="103" y="-479.3" font-family="arial" font-size="14.00">female</text>
+<polygon fill="none" stroke="black" points="150,-471.5 150,-494.5 190,-494.5 190,-471.5 150,-471.5"/>
+<text text-anchor="start" x="154" y="-479.3" font-family="arial" font-size="14.00">8&#45;pin</text>
+<polygon fill="none" stroke="black" points="3,-448.5 3,-471.5 111,-471.5 111,-448.5 3,-448.5"/>
+<text text-anchor="start" x="41" y="-456.3" font-family="arial" font-size="14.00">GND</text>
+<polygon fill="none" stroke="black" points="111,-448.5 111,-471.5 190,-471.5 190,-448.5 111,-448.5"/>
+<text text-anchor="start" x="146.5" y="-456.3" font-family="arial" font-size="14.00">1</text>
+<polygon fill="none" stroke="black" points="3,-425.5 3,-448.5 111,-448.5 111,-425.5 3,-425.5"/>
+<text text-anchor="start" x="44" y="-433.3" font-family="arial" font-size="14.00">+5V</text>
+<polygon fill="none" stroke="black" points="111,-425.5 111,-448.5 190,-448.5 190,-425.5 111,-425.5"/>
+<text text-anchor="start" x="146.5" y="-433.3" font-family="arial" font-size="14.00">2</text>
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+<text text-anchor="start" x="43" y="-410.3" font-family="arial" font-size="14.00">SCL</text>
+<polygon fill="none" stroke="black" points="111,-402.5 111,-425.5 190,-425.5 190,-402.5 111,-402.5"/>
+<text text-anchor="start" x="146.5" y="-410.3" font-family="arial" font-size="14.00">3</text>
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+<text text-anchor="start" x="42.5" y="-387.3" font-family="arial" font-size="14.00">SDA</text>
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+<text text-anchor="start" x="146.5" y="-387.3" font-family="arial" font-size="14.00">4</text>
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+<text text-anchor="start" x="39" y="-364.3" font-family="arial" font-size="14.00">MISO</text>
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+<text text-anchor="start" x="146.5" y="-364.3" font-family="arial" font-size="14.00">5</text>
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+<polygon fill="#ffffff" stroke="black" points="874,-518.5 687,-518.5 687,-380.5 874,-380.5 874,-518.5"/>
+<polygon fill="none" stroke="black" points="687.5,-495.5 687.5,-518.5 874.5,-518.5 874.5,-495.5 687.5,-495.5"/>
+<text text-anchor="start" x="772" y="-503.3" font-family="arial" font-size="14.00">X3</text>
+<polygon fill="none" stroke="black" points="687.5,-472.5 687.5,-495.5 783.5,-495.5 783.5,-472.5 687.5,-472.5"/>
+<text text-anchor="start" x="691.5" y="-480.3" font-family="arial" font-size="14.00">Molex KK 254</text>
+<polygon fill="none" stroke="black" points="783.5,-472.5 783.5,-495.5 834.5,-495.5 834.5,-472.5 783.5,-472.5"/>
+<text text-anchor="start" x="787.5" y="-480.3" font-family="arial" font-size="14.00">female</text>
+<polygon fill="none" stroke="black" points="834.5,-472.5 834.5,-495.5 874.5,-495.5 874.5,-472.5 834.5,-472.5"/>
+<text text-anchor="start" x="838.5" y="-480.3" font-family="arial" font-size="14.00">4&#45;pin</text>
+<polygon fill="none" stroke="black" points="687.5,-449.5 687.5,-472.5 769.5,-472.5 769.5,-449.5 687.5,-449.5"/>
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+<polygon fill="none" stroke="black" points="769.5,-449.5 769.5,-472.5 874.5,-472.5 874.5,-449.5 769.5,-449.5"/>
+<text text-anchor="start" x="806" y="-457.3" font-family="arial" font-size="14.00">GND</text>
+<polygon fill="none" stroke="black" points="687.5,-426.5 687.5,-449.5 769.5,-449.5 769.5,-426.5 687.5,-426.5"/>
+<text text-anchor="start" x="724.5" y="-434.3" font-family="arial" font-size="14.00">2</text>
+<polygon fill="none" stroke="black" points="769.5,-426.5 769.5,-449.5 874.5,-449.5 874.5,-426.5 769.5,-426.5"/>
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+<polygon fill="none" stroke="black" points="687.5,-403.5 687.5,-426.5 769.5,-426.5 769.5,-403.5 687.5,-403.5"/>
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+<polygon fill="none" stroke="black" points="769.5,-403.5 769.5,-426.5 874.5,-426.5 874.5,-403.5 769.5,-403.5"/>
+<text text-anchor="start" x="808" y="-411.3" font-family="arial" font-size="14.00">SCL</text>
+<polygon fill="none" stroke="black" points="687.5,-380.5 687.5,-403.5 769.5,-403.5 769.5,-380.5 687.5,-380.5"/>
+<text text-anchor="start" x="724.5" y="-388.3" font-family="arial" font-size="14.00">4</text>
+<polygon fill="none" stroke="black" points="769.5,-380.5 769.5,-403.5 874.5,-403.5 874.5,-380.5 769.5,-380.5"/>
+<text text-anchor="start" x="807.5" y="-388.3" font-family="arial" font-size="14.00">SDA</text>
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 <g id="node4" class="node">
 <title>X4</title>
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-<polygon fill="none" stroke="black" points="675,-311 675,-334 857,-334 857,-311 675,-311"/>
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-<text text-anchor="start" x="786" y="-226.8" font-family="arial" font-size="14.00">MISO</text>
-<polygon fill="none" stroke="black" points="675,-196 675,-219 752,-219 752,-196 675,-196"/>
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-<polygon fill="none" stroke="black" points="752,-173 752,-196 857,-196 857,-173 752,-173"/>
-<text text-anchor="start" x="790.5" y="-180.8" font-family="arial" font-size="14.00">SCK</text>
+<polygon fill="#ffffff" stroke="black" points="874,-322 687,-322 687,-161 874,-161 874,-322"/>
+<polygon fill="none" stroke="black" points="687.5,-298.5 687.5,-321.5 874.5,-321.5 874.5,-298.5 687.5,-298.5"/>
+<text text-anchor="start" x="772" y="-306.3" font-family="arial" font-size="14.00">X4</text>
+<polygon fill="none" stroke="black" points="687.5,-275.5 687.5,-298.5 783.5,-298.5 783.5,-275.5 687.5,-275.5"/>
+<text text-anchor="start" x="691.5" y="-283.3" font-family="arial" font-size="14.00">Molex KK 254</text>
+<polygon fill="none" stroke="black" points="783.5,-275.5 783.5,-298.5 834.5,-298.5 834.5,-275.5 783.5,-275.5"/>
+<text text-anchor="start" x="787.5" y="-283.3" font-family="arial" font-size="14.00">female</text>
+<polygon fill="none" stroke="black" points="834.5,-275.5 834.5,-298.5 874.5,-298.5 874.5,-275.5 834.5,-275.5"/>
+<text text-anchor="start" x="838.5" y="-283.3" font-family="arial" font-size="14.00">5&#45;pin</text>
+<polygon fill="none" stroke="black" points="687.5,-252.5 687.5,-275.5 767.5,-275.5 767.5,-252.5 687.5,-252.5"/>
+<text text-anchor="start" x="723.5" y="-260.3" font-family="arial" font-size="14.00">1</text>
+<polygon fill="none" stroke="black" points="767.5,-252.5 767.5,-275.5 874.5,-275.5 874.5,-252.5 767.5,-252.5"/>
+<text text-anchor="start" x="805" y="-260.3" font-family="arial" font-size="14.00">GND</text>
+<polygon fill="none" stroke="black" points="687.5,-229.5 687.5,-252.5 767.5,-252.5 767.5,-229.5 687.5,-229.5"/>
+<text text-anchor="start" x="723.5" y="-237.3" font-family="arial" font-size="14.00">2</text>
+<polygon fill="none" stroke="black" points="767.5,-229.5 767.5,-252.5 874.5,-252.5 874.5,-229.5 767.5,-229.5"/>
+<text text-anchor="start" x="804" y="-237.3" font-family="arial" font-size="14.00">+12V</text>
+<polygon fill="none" stroke="black" points="687.5,-206.5 687.5,-229.5 767.5,-229.5 767.5,-206.5 687.5,-206.5"/>
+<text text-anchor="start" x="723.5" y="-214.3" font-family="arial" font-size="14.00">3</text>
+<polygon fill="none" stroke="black" points="767.5,-206.5 767.5,-229.5 874.5,-229.5 874.5,-206.5 767.5,-206.5"/>
+<text text-anchor="start" x="803" y="-214.3" font-family="arial" font-size="14.00">MISO</text>
+<polygon fill="none" stroke="black" points="687.5,-183.5 687.5,-206.5 767.5,-206.5 767.5,-183.5 687.5,-183.5"/>
+<text text-anchor="start" x="723.5" y="-191.3" font-family="arial" font-size="14.00">4</text>
+<polygon fill="none" stroke="black" points="767.5,-183.5 767.5,-206.5 874.5,-206.5 874.5,-183.5 767.5,-183.5"/>
+<text text-anchor="start" x="803" y="-191.3" font-family="arial" font-size="14.00">MOSI</text>
+<polygon fill="none" stroke="black" points="687.5,-160.5 687.5,-183.5 767.5,-183.5 767.5,-160.5 687.5,-160.5"/>
+<text text-anchor="start" x="723.5" y="-168.3" font-family="arial" font-size="14.00">5</text>
+<polygon fill="none" stroke="black" points="767.5,-160.5 767.5,-183.5 874.5,-183.5 874.5,-160.5 767.5,-160.5"/>
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 <!-- _ferrule_crimp_1 -->
 <g id="node5" class="node">
 <title>_ferrule_crimp_1</title>
-<polygon fill="white" stroke="transparent" points="189,-96 0,-96 0,-60 189,-60 189,-96"/>
-<polygon fill="none" stroke="black" points="0.5,-66 0.5,-89 87.5,-89 87.5,-66 0.5,-66"/>
-<text text-anchor="start" x="4.5" y="-73.8" font-family="arial" font-size="14.00">Crimp ferrule</text>
-<polygon fill="none" stroke="black" points="87.5,-66 87.5,-89 154.5,-89 154.5,-66 87.5,-66"/>
-<text text-anchor="start" x="91.5" y="-73.8" font-family="arial" font-size="14.00">0.25 mm²</text>
-<polygon fill="none" stroke="black" points="154.5,-66 154.5,-89 181.5,-89 181.5,-66 154.5,-66"/>
-<text text-anchor="start" x="158.5" y="-73.8" font-family="arial" font-size="14.00">YE</text>
-<polygon fill="#ffff00" stroke="transparent" points="181.5,-66 181.5,-89 189.5,-89 189.5,-66 181.5,-66"/>
-<polygon fill="none" stroke="black" points="181.5,-66 181.5,-89 189.5,-89 189.5,-66 181.5,-66"/>
+<polygon fill="#ffffff" stroke="black" points="192,-70 0,-70 0,-47 192,-47 192,-70"/>
+<polygon fill="none" stroke="black" points="0,-46.5 0,-69.5 89,-69.5 89,-46.5 0,-46.5"/>
+<text text-anchor="start" x="4" y="-54.3" font-family="arial" font-size="14.00">Crimp ferrule</text>
+<polygon fill="none" stroke="black" points="89,-46.5 89,-69.5 157,-69.5 157,-46.5 89,-46.5"/>
+<text text-anchor="start" x="93" y="-54.3" font-family="arial" font-size="14.00">0.25 mm²</text>
+<polygon fill="none" stroke="black" points="157,-46.5 157,-69.5 184,-69.5 184,-46.5 157,-46.5"/>
+<text text-anchor="start" x="161" y="-54.3" font-family="arial" font-size="14.00">YE</text>
+<polygon fill="#ffff00" stroke="transparent" points="184,-46.5 184,-69.5 192,-69.5 192,-46.5 184,-46.5"/>
+<polygon fill="none" stroke="black" points="184,-46.5 184,-69.5 192,-69.5 192,-46.5 184,-46.5"/>
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 <!-- W4 -->
 <g id="node10" class="node">
 <title>W4</title>
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-<polygon fill="none" stroke="black" points="333,-124 333,-147 531,-147 531,-124 333,-124"/>
-<text text-anchor="start" x="421" y="-131.8" font-family="arial" font-size="14.00">W4</text>
-<polygon fill="none" stroke="black" points="333,-101 333,-124 356,-124 356,-101 333,-101"/>
-<text text-anchor="start" x="337" y="-108.8" font-family="arial" font-size="14.00">2x</text>
-<polygon fill="none" stroke="black" points="356,-101 356,-124 488,-124 488,-101 356,-101"/>
-<text text-anchor="start" x="360" y="-108.8" font-family="arial" font-size="14.00">0.25 mm² (24 AWG)</text>
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-<polygon fill="#000000" stroke="transparent" points="333,-61 333,-63 531,-63 531,-61 333,-61"/>
-<polygon fill="#000000" stroke="transparent" points="333,-59 333,-61 531,-61 531,-59 333,-59"/>
-<polygon fill="#000000" stroke="transparent" points="333,-57 333,-59 531,-59 531,-57 333,-57"/>
-<text text-anchor="start" x="410.5" y="-43.8" font-family="arial" font-size="14.00">RD</text>
-<text text-anchor="start" x="479" y="-43.8" font-family="arial" font-size="14.00">X4:2</text>
-<polygon fill="#000000" stroke="transparent" points="333,-36 333,-38 531,-38 531,-36 333,-36"/>
-<polygon fill="#ff0000" stroke="transparent" points="333,-34 333,-36 531,-36 531,-34 333,-34"/>
-<polygon fill="#000000" stroke="transparent" points="333,-32 333,-34 531,-34 531,-32 333,-32"/>
-<text text-anchor="start" x="357.5" y="-18.8" font-family="arial" font-size="14.00"> </text>
+<polygon fill="#ffffff" stroke="black" points="539,-134.5 340,-134.5 340,-0.5 539,-0.5 539,-134.5"/>
+<polygon fill="none" stroke="black" points="340.5,-111.5 340.5,-134.5 539.5,-134.5 539.5,-111.5 340.5,-111.5"/>
+<text text-anchor="start" x="429.5" y="-119.3" font-family="arial" font-size="14.00">W4</text>
+<polygon fill="none" stroke="black" points="340.5,-88.5 340.5,-111.5 363.5,-111.5 363.5,-88.5 340.5,-88.5"/>
+<text text-anchor="start" x="344.5" y="-96.3" font-family="arial" font-size="14.00">2x</text>
+<polygon fill="none" stroke="black" points="363.5,-88.5 363.5,-111.5 495.5,-111.5 495.5,-88.5 363.5,-88.5"/>
+<text text-anchor="start" x="367.5" y="-96.3" font-family="arial" font-size="14.00">0.25 mm² (24 AWG)</text>
+<polygon fill="none" stroke="black" points="495.5,-88.5 495.5,-111.5 539.5,-111.5 539.5,-88.5 495.5,-88.5"/>
+<text text-anchor="start" x="499.5" y="-96.3" font-family="arial" font-size="14.00">0.3 m</text>
+<text text-anchor="start" x="351" y="-75.3" font-family="arial" font-size="14.00"> </text>
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+<polygon fill="#000000" stroke="transparent" points="340.5,-48.5 340.5,-50.5 539.5,-50.5 539.5,-48.5 340.5,-48.5"/>
+<polygon fill="#000000" stroke="transparent" points="340.5,-46.5 340.5,-48.5 539.5,-48.5 539.5,-46.5 340.5,-46.5"/>
+<polygon fill="#000000" stroke="transparent" points="340.5,-44.5 340.5,-46.5 539.5,-46.5 539.5,-44.5 340.5,-44.5"/>
+<text text-anchor="start" x="376" y="-31.3" font-family="arial" font-size="14.00"> &#160;&#160;&#160;&#160;2:RD &#160;&#160;&#160;</text>
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+<polygon fill="#ff0000" stroke="transparent" points="340.5,-21.5 340.5,-23.5 539.5,-23.5 539.5,-21.5 340.5,-21.5"/>
+<polygon fill="#000000" stroke="transparent" points="340.5,-19.5 340.5,-21.5 539.5,-21.5 539.5,-19.5 340.5,-19.5"/>
+<text text-anchor="start" x="351" y="-6.3" font-family="arial" font-size="14.00"> </text>
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 <!-- _ferrule_crimp_1&#45;&#45;W4 -->
 <g id="edge25" class="edge">
 <title>_ferrule_crimp_1:e&#45;&#45;W4:w</title>
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-<path fill="none" stroke="#000000" stroke-width="2" d="M189,-78C253.5,-78 268.5,-60 333,-60"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M189,-80C255.03,-79.28 270.04,-61.28 333,-62"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M192,-56.5C256.61,-56.85 272.63,-45.85 339.5,-45.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M192,-58.5C257.74,-58.5 273.76,-47.5 339.5,-47.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M192,-60.5C258.87,-60.15 274.89,-49.15 339.5,-49.5"/>
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 <!-- _ferrule_crimp_2 -->
 <g id="node6" class="node">
 <title>_ferrule_crimp_2</title>
-<polygon fill="white" stroke="transparent" points="189,-36 0,-36 0,0 189,0 189,-36"/>
-<polygon fill="none" stroke="black" points="0.5,-6 0.5,-29 87.5,-29 87.5,-6 0.5,-6"/>
-<text text-anchor="start" x="4.5" y="-13.8" font-family="arial" font-size="14.00">Crimp ferrule</text>
-<polygon fill="none" stroke="black" points="87.5,-6 87.5,-29 154.5,-29 154.5,-6 87.5,-6"/>
-<text text-anchor="start" x="91.5" y="-13.8" font-family="arial" font-size="14.00">0.25 mm²</text>
-<polygon fill="none" stroke="black" points="154.5,-6 154.5,-29 181.5,-29 181.5,-6 154.5,-6"/>
-<text text-anchor="start" x="158.5" y="-13.8" font-family="arial" font-size="14.00">YE</text>
-<polygon fill="#ffff00" stroke="transparent" points="181.5,-6 181.5,-29 189.5,-29 189.5,-6 181.5,-6"/>
-<polygon fill="none" stroke="black" points="181.5,-6 181.5,-29 189.5,-29 189.5,-6 181.5,-6"/>
+<polygon fill="#ffffff" stroke="black" points="192,-23 0,-23 0,0 192,0 192,-23"/>
+<polygon fill="none" stroke="black" points="0,0.5 0,-22.5 89,-22.5 89,0.5 0,0.5"/>
+<text text-anchor="start" x="4" y="-7.3" font-family="arial" font-size="14.00">Crimp ferrule</text>
+<polygon fill="none" stroke="black" points="89,0.5 89,-22.5 157,-22.5 157,0.5 89,0.5"/>
+<text text-anchor="start" x="93" y="-7.3" font-family="arial" font-size="14.00">0.25 mm²</text>
+<polygon fill="none" stroke="black" points="157,0.5 157,-22.5 184,-22.5 184,0.5 157,0.5"/>
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+<h2>Bill of Materials</h2>
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+ <tr>
+  <th style="text-align:left; border:1px solid #000000; padding: 8px">Id</th>
+  <th style="text-align:left; border:1px solid #000000; padding: 8px">Description</th>
+  <th style="text-align:left; border:1px solid #000000; padding: 8px">Qty</th>
+  <th style="text-align:left; border:1px solid #000000; padding: 8px">Unit</th>
+  <th style="text-align:left; border:1px solid #000000; padding: 8px">Designators</th>
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+  <td style="border:1px solid #000000; padding: 4px">1</td>
+  <td style="border:1px solid #000000; padding: 4px">Cable, 2 x 0.25 mm&sup2;</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">0.3</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W4</td>
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+  <td style="border:1px solid #000000; padding: 4px">2</td>
+  <td style="border:1px solid #000000; padding: 4px">Connector, Crimp ferrule, 0.25 mm&sup2;, YE</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">2</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">3</td>
+  <td style="border:1px solid #000000; padding: 4px">Connector, Molex KK 254, female, 4 pins</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">2</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px">X2, X3</td>
+ </tr>
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+  <td style="border:1px solid #000000; padding: 4px">4</td>
+  <td style="border:1px solid #000000; padding: 4px">Connector, Molex KK 254, female, 5 pins</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">1</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px">X4</td>
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+  <td style="border:1px solid #000000; padding: 4px">5</td>
+  <td style="border:1px solid #000000; padding: 4px">Connector, Molex KK 254, female, 8 pins</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">1</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px">X1</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">6</td>
+  <td style="border:1px solid #000000; padding: 4px">Wire, 0.14 mm&sup2;, BK</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">0.9</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W1, W2, W3</td>
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+  <td style="border:1px solid #000000; padding: 4px">7</td>
+  <td style="border:1px solid #000000; padding: 4px">Wire, 0.14 mm&sup2;, BU</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">0.3</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W3</td>
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+  <td style="border:1px solid #000000; padding: 4px">8</td>
+  <td style="border:1px solid #000000; padding: 4px">Wire, 0.14 mm&sup2;, GN</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">0.6</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W1, W2</td>
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+  <td style="border:1px solid #000000; padding: 4px">9</td>
+  <td style="border:1px solid #000000; padding: 4px">Wire, 0.14 mm&sup2;, OG</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">0.3</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W3</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">10</td>
+  <td style="border:1px solid #000000; padding: 4px">Wire, 0.14 mm&sup2;, RD</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">0.6</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W1, W2</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">11</td>
+  <td style="border:1px solid #000000; padding: 4px">Wire, 0.14 mm&sup2;, VT</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">0.3</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W3</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">12</td>
+  <td style="border:1px solid #000000; padding: 4px">Wire, 0.14 mm&sup2;, YE</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">0.6</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W1, W2</td>
+ </tr>
+</table>
+</body></html>
diff --git a/examples/demo02.png b/examples/demo02.png
index de439fa6..66726770 100644
Binary files a/examples/demo02.png and b/examples/demo02.png differ
diff --git a/examples/demo02.svg b/examples/demo02.svg
index 9febbada..06320f89 100644
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 <title>X1:e&#45;&#45;W2:w</title>
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 <!-- X1&#45;&#45;W2 -->
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 <title>X1:e&#45;&#45;W2:w</title>
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 <!-- X1&#45;&#45;W2 -->
 <g id="edge13" class="edge">
 <title>X1:e&#45;&#45;W2:w</title>
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 <title>X1:e&#45;&#45;W2:w</title>
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+<polygon fill="none" stroke="black" points="687.5,-206.5 687.5,-229.5 767.5,-229.5 767.5,-206.5 687.5,-206.5"/>
+<text text-anchor="start" x="723.5" y="-214.3" font-family="arial" font-size="14.00">3</text>
+<polygon fill="none" stroke="black" points="767.5,-206.5 767.5,-229.5 874.5,-229.5 874.5,-206.5 767.5,-206.5"/>
+<text text-anchor="start" x="803" y="-214.3" font-family="arial" font-size="14.00">MISO</text>
+<polygon fill="none" stroke="black" points="687.5,-183.5 687.5,-206.5 767.5,-206.5 767.5,-183.5 687.5,-183.5"/>
+<text text-anchor="start" x="723.5" y="-191.3" font-family="arial" font-size="14.00">4</text>
+<polygon fill="none" stroke="black" points="767.5,-183.5 767.5,-206.5 874.5,-206.5 874.5,-183.5 767.5,-183.5"/>
+<text text-anchor="start" x="803" y="-191.3" font-family="arial" font-size="14.00">MOSI</text>
+<polygon fill="none" stroke="black" points="687.5,-160.5 687.5,-183.5 767.5,-183.5 767.5,-160.5 687.5,-160.5"/>
+<text text-anchor="start" x="723.5" y="-168.3" font-family="arial" font-size="14.00">5</text>
+<polygon fill="none" stroke="black" points="767.5,-160.5 767.5,-183.5 874.5,-183.5 874.5,-160.5 767.5,-160.5"/>
+<text text-anchor="start" x="806.5" y="-168.3" font-family="arial" font-size="14.00">SCK</text>
 </g>
 <!-- _ferrule_crimp_1 -->
 <g id="node5" class="node">
 <title>_ferrule_crimp_1</title>
-<polygon fill="white" stroke="transparent" points="189,-96 0,-96 0,-60 189,-60 189,-96"/>
-<polygon fill="none" stroke="black" points="0.5,-66 0.5,-89 87.5,-89 87.5,-66 0.5,-66"/>
-<text text-anchor="start" x="4.5" y="-73.8" font-family="arial" font-size="14.00">Crimp ferrule</text>
-<polygon fill="none" stroke="black" points="87.5,-66 87.5,-89 154.5,-89 154.5,-66 87.5,-66"/>
-<text text-anchor="start" x="91.5" y="-73.8" font-family="arial" font-size="14.00">0.25 mm²</text>
-<polygon fill="none" stroke="black" points="154.5,-66 154.5,-89 181.5,-89 181.5,-66 154.5,-66"/>
-<text text-anchor="start" x="158.5" y="-73.8" font-family="arial" font-size="14.00">YE</text>
-<polygon fill="#ffff00" stroke="transparent" points="181.5,-66 181.5,-89 189.5,-89 189.5,-66 181.5,-66"/>
-<polygon fill="none" stroke="black" points="181.5,-66 181.5,-89 189.5,-89 189.5,-66 181.5,-66"/>
+<polygon fill="#ffffff" stroke="black" points="192,-70 0,-70 0,-47 192,-47 192,-70"/>
+<polygon fill="none" stroke="black" points="0,-46.5 0,-69.5 89,-69.5 89,-46.5 0,-46.5"/>
+<text text-anchor="start" x="4" y="-54.3" font-family="arial" font-size="14.00">Crimp ferrule</text>
+<polygon fill="none" stroke="black" points="89,-46.5 89,-69.5 157,-69.5 157,-46.5 89,-46.5"/>
+<text text-anchor="start" x="93" y="-54.3" font-family="arial" font-size="14.00">0.25 mm²</text>
+<polygon fill="none" stroke="black" points="157,-46.5 157,-69.5 184,-69.5 184,-46.5 157,-46.5"/>
+<text text-anchor="start" x="161" y="-54.3" font-family="arial" font-size="14.00">YE</text>
+<polygon fill="#ffff00" stroke="transparent" points="184,-46.5 184,-69.5 192,-69.5 192,-46.5 184,-46.5"/>
+<polygon fill="none" stroke="black" points="184,-46.5 184,-69.5 192,-69.5 192,-46.5 184,-46.5"/>
 </g>
 <!-- W4 -->
 <g id="node10" class="node">
 <title>W4</title>
-<polygon fill="none" stroke="black" points="531,-147 333,-147 333,-13 531,-13 531,-147"/>
-<polygon fill="none" stroke="black" points="333,-124 333,-147 531,-147 531,-124 333,-124"/>
-<text text-anchor="start" x="421" y="-131.8" font-family="arial" font-size="14.00">W4</text>
-<polygon fill="none" stroke="black" points="333,-101 333,-124 356,-124 356,-101 333,-101"/>
-<text text-anchor="start" x="337" y="-108.8" font-family="arial" font-size="14.00">2x</text>
-<polygon fill="none" stroke="black" points="356,-101 356,-124 488,-124 488,-101 356,-101"/>
-<text text-anchor="start" x="360" y="-108.8" font-family="arial" font-size="14.00">0.25 mm² (24 AWG)</text>
-<polygon fill="none" stroke="black" points="488,-101 488,-124 531,-124 531,-101 488,-101"/>
-<text text-anchor="start" x="492" y="-108.8" font-family="arial" font-size="14.00">0.3 m</text>
-<text text-anchor="start" x="357.5" y="-87.8" font-family="arial" font-size="14.00"> </text>
-<text text-anchor="start" x="411" y="-68.8" font-family="arial" font-size="14.00">BK</text>
-<text text-anchor="start" x="479" y="-68.8" font-family="arial" font-size="14.00">X4:1</text>
-<polygon fill="#000000" stroke="transparent" points="333,-61 333,-63 531,-63 531,-61 333,-61"/>
-<polygon fill="#000000" stroke="transparent" points="333,-59 333,-61 531,-61 531,-59 333,-59"/>
-<polygon fill="#000000" stroke="transparent" points="333,-57 333,-59 531,-59 531,-57 333,-57"/>
-<text text-anchor="start" x="410.5" y="-43.8" font-family="arial" font-size="14.00">RD</text>
-<text text-anchor="start" x="479" y="-43.8" font-family="arial" font-size="14.00">X4:2</text>
-<polygon fill="#000000" stroke="transparent" points="333,-36 333,-38 531,-38 531,-36 333,-36"/>
-<polygon fill="#ff0000" stroke="transparent" points="333,-34 333,-36 531,-36 531,-34 333,-34"/>
-<polygon fill="#000000" stroke="transparent" points="333,-32 333,-34 531,-34 531,-32 333,-32"/>
-<text text-anchor="start" x="357.5" y="-18.8" font-family="arial" font-size="14.00"> </text>
+<polygon fill="#ffffff" stroke="black" points="539,-134.5 340,-134.5 340,-0.5 539,-0.5 539,-134.5"/>
+<polygon fill="none" stroke="black" points="340.5,-111.5 340.5,-134.5 539.5,-134.5 539.5,-111.5 340.5,-111.5"/>
+<text text-anchor="start" x="429.5" y="-119.3" font-family="arial" font-size="14.00">W4</text>
+<polygon fill="none" stroke="black" points="340.5,-88.5 340.5,-111.5 363.5,-111.5 363.5,-88.5 340.5,-88.5"/>
+<text text-anchor="start" x="344.5" y="-96.3" font-family="arial" font-size="14.00">2x</text>
+<polygon fill="none" stroke="black" points="363.5,-88.5 363.5,-111.5 495.5,-111.5 495.5,-88.5 363.5,-88.5"/>
+<text text-anchor="start" x="367.5" y="-96.3" font-family="arial" font-size="14.00">0.25 mm² (24 AWG)</text>
+<polygon fill="none" stroke="black" points="495.5,-88.5 495.5,-111.5 539.5,-111.5 539.5,-88.5 495.5,-88.5"/>
+<text text-anchor="start" x="499.5" y="-96.3" font-family="arial" font-size="14.00">0.3 m</text>
+<text text-anchor="start" x="351" y="-75.3" font-family="arial" font-size="14.00"> </text>
+<text text-anchor="start" x="376.5" y="-56.3" font-family="arial" font-size="14.00"> &#160;&#160;&#160;&#160;1:BK &#160;&#160;&#160;</text>
+<text text-anchor="start" x="464.5" y="-56.3" font-family="arial" font-size="14.00">X4:1:GND</text>
+<polygon fill="#000000" stroke="transparent" points="340.5,-48.5 340.5,-50.5 539.5,-50.5 539.5,-48.5 340.5,-48.5"/>
+<polygon fill="#000000" stroke="transparent" points="340.5,-46.5 340.5,-48.5 539.5,-48.5 539.5,-46.5 340.5,-46.5"/>
+<polygon fill="#000000" stroke="transparent" points="340.5,-44.5 340.5,-46.5 539.5,-46.5 539.5,-44.5 340.5,-44.5"/>
+<text text-anchor="start" x="376" y="-31.3" font-family="arial" font-size="14.00"> &#160;&#160;&#160;&#160;2:RD &#160;&#160;&#160;</text>
+<text text-anchor="start" x="463.5" y="-31.3" font-family="arial" font-size="14.00">X4:2:+12V</text>
+<polygon fill="#000000" stroke="transparent" points="340.5,-23.5 340.5,-25.5 539.5,-25.5 539.5,-23.5 340.5,-23.5"/>
+<polygon fill="#ff0000" stroke="transparent" points="340.5,-21.5 340.5,-23.5 539.5,-23.5 539.5,-21.5 340.5,-21.5"/>
+<polygon fill="#000000" stroke="transparent" points="340.5,-19.5 340.5,-21.5 539.5,-21.5 539.5,-19.5 340.5,-19.5"/>
+<text text-anchor="start" x="351" y="-6.3" font-family="arial" font-size="14.00"> </text>
 </g>
 <!-- _ferrule_crimp_1&#45;&#45;W4 -->
 <g id="edge25" class="edge">
 <title>_ferrule_crimp_1:e&#45;&#45;W4:w</title>
-<path fill="none" stroke="#000000" stroke-width="2" d="M189,-76C251.96,-76.72 266.97,-58.72 333,-58"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M189,-78C253.5,-78 268.5,-60 333,-60"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M189,-80C255.03,-79.28 270.04,-61.28 333,-62"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M192,-56.5C256.61,-56.85 272.63,-45.85 339.5,-45.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M192,-58.5C257.74,-58.5 273.76,-47.5 339.5,-47.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M192,-60.5C258.87,-60.15 274.89,-49.15 339.5,-49.5"/>
 </g>
 <!-- _ferrule_crimp_2 -->
 <g id="node6" class="node">
 <title>_ferrule_crimp_2</title>
-<polygon fill="white" stroke="transparent" points="189,-36 0,-36 0,0 189,0 189,-36"/>
-<polygon fill="none" stroke="black" points="0.5,-6 0.5,-29 87.5,-29 87.5,-6 0.5,-6"/>
-<text text-anchor="start" x="4.5" y="-13.8" font-family="arial" font-size="14.00">Crimp ferrule</text>
-<polygon fill="none" stroke="black" points="87.5,-6 87.5,-29 154.5,-29 154.5,-6 87.5,-6"/>
-<text text-anchor="start" x="91.5" y="-13.8" font-family="arial" font-size="14.00">0.25 mm²</text>
-<polygon fill="none" stroke="black" points="154.5,-6 154.5,-29 181.5,-29 181.5,-6 154.5,-6"/>
-<text text-anchor="start" x="158.5" y="-13.8" font-family="arial" font-size="14.00">YE</text>
-<polygon fill="#ffff00" stroke="transparent" points="181.5,-6 181.5,-29 189.5,-29 189.5,-6 181.5,-6"/>
-<polygon fill="none" stroke="black" points="181.5,-6 181.5,-29 189.5,-29 189.5,-6 181.5,-6"/>
+<polygon fill="#ffffff" stroke="black" points="192,-23 0,-23 0,0 192,0 192,-23"/>
+<polygon fill="none" stroke="black" points="0,0.5 0,-22.5 89,-22.5 89,0.5 0,0.5"/>
+<text text-anchor="start" x="4" y="-7.3" font-family="arial" font-size="14.00">Crimp ferrule</text>
+<polygon fill="none" stroke="black" points="89,0.5 89,-22.5 157,-22.5 157,0.5 89,0.5"/>
+<text text-anchor="start" x="93" y="-7.3" font-family="arial" font-size="14.00">0.25 mm²</text>
+<polygon fill="none" stroke="black" points="157,0.5 157,-22.5 184,-22.5 184,0.5 157,0.5"/>
+<text text-anchor="start" x="161" y="-7.3" font-family="arial" font-size="14.00">YE</text>
+<polygon fill="#ffff00" stroke="transparent" points="184,0.5 184,-22.5 192,-22.5 192,0.5 184,0.5"/>
+<polygon fill="none" stroke="black" points="184,0.5 184,-22.5 192,-22.5 192,0.5 184,0.5"/>
 </g>
 <!-- _ferrule_crimp_2&#45;&#45;W4 -->
 <g id="edge27" class="edge">
 <title>_ferrule_crimp_2:e&#45;&#45;W4:w</title>
-<path fill="none" stroke="#000000" stroke-width="2" d="M189,-16C254.94,-16.67 270.05,-33.67 333,-33"/>
-<path fill="none" stroke="#ff0000" stroke-width="2" d="M189,-18C253.44,-18 268.56,-35 333,-35"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M189,-20C251.95,-19.33 267.06,-36.33 333,-37"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M192,-9.5C258.87,-9.85 274.89,-20.85 339.5,-20.5"/>
+<path fill="none" stroke="#ff0000" stroke-width="2" d="M192,-11.5C257.74,-11.5 273.76,-22.5 339.5,-22.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M192,-13.5C256.61,-13.15 272.63,-24.15 339.5,-24.5"/>
 </g>
 <!-- W1&#45;&#45;X2 -->
 <g id="edge2" class="edge">
 <title>W1:e&#45;&#45;X2:w</title>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-682C594.76,-682.02 610.75,-680.02 675,-680"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-684C595.01,-684 610.99,-682 675,-682"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-686C595.25,-685.98 611.24,-683.98 675,-684"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-669.5C605.37,-669.51 621.64,-667.51 687,-667.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-671.5C605.62,-671.5 621.88,-669.5 687,-669.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-673.5C605.86,-673.49 622.13,-671.49 687,-671.5"/>
 </g>
 <!-- W1&#45;&#45;X2 -->
 <g id="edge4" class="edge">
 <title>W1:e&#45;&#45;X2:w</title>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-657C594.88,-657 610.87,-656 675,-656"/>
-<path fill="none" stroke="#ff0000" stroke-width="2" d="M531,-659C595,-659 611,-658 675,-658"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-661C595.13,-661 611.12,-660 675,-660"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-644.5C605.49,-644.5 621.76,-643.5 687,-643.5"/>
+<path fill="none" stroke="#ff0000" stroke-width="2" d="M540.5,-646.5C605.61,-646.5 621.89,-645.5 687,-645.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-648.5C605.74,-648.5 622.01,-647.5 687,-647.5"/>
 </g>
 <!-- W1&#45;&#45;X2 -->
 <g id="edge6" class="edge">
 <title>W1:e&#45;&#45;X2:w</title>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-632C595.13,-632 611.12,-633 675,-633"/>
-<path fill="none" stroke="#ffff00" stroke-width="2" d="M531,-634C595,-634 611,-635 675,-635"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-636C594.88,-636 610.87,-637 675,-637"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-619.5C605.74,-619.5 622.01,-620.5 687,-620.5"/>
+<path fill="none" stroke="#ffff00" stroke-width="2" d="M540.5,-621.5C605.61,-621.5 621.89,-622.5 687,-622.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-623.5C605.49,-623.5 621.76,-624.5 687,-624.5"/>
 </g>
 <!-- W1&#45;&#45;X2 -->
 <g id="edge8" class="edge">
 <title>W1:e&#45;&#45;X2:w</title>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-607C595.38,-607.03 611.36,-610.03 675,-610"/>
-<path fill="none" stroke="#00ff00" stroke-width="2" d="M531,-609C595.01,-609 610.99,-612 675,-612"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-611C594.64,-610.97 610.62,-613.97 675,-614"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-594.5C605.99,-594.53 622.24,-597.53 687,-597.5"/>
+<path fill="none" stroke="#00ff00" stroke-width="2" d="M540.5,-596.5C605.62,-596.5 621.88,-599.5 687,-599.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-598.5C605.26,-598.47 621.51,-601.47 687,-601.5"/>
 </g>
 <!-- W2&#45;&#45;X3 -->
 <g id="edge10" class="edge">
 <title>W2:e&#45;&#45;X3:w</title>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-474C594.76,-474.02 610.75,-472.02 675,-472"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-476C595.01,-476 610.99,-474 675,-474"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-478C595.25,-477.98 611.24,-475.98 675,-476"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-461.5C605.37,-461.51 621.64,-459.51 687,-459.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-463.5C605.62,-463.5 621.88,-461.5 687,-461.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-465.5C605.86,-465.49 622.13,-463.49 687,-463.5"/>
 </g>
 <!-- W2&#45;&#45;X3 -->
 <g id="edge12" class="edge">
 <title>W2:e&#45;&#45;X3:w</title>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-449C594.88,-449 610.87,-448 675,-448"/>
-<path fill="none" stroke="#ff0000" stroke-width="2" d="M531,-451C595,-451 611,-450 675,-450"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-453C595.13,-453 611.12,-452 675,-452"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-436.5C605.49,-436.5 621.76,-435.5 687,-435.5"/>
+<path fill="none" stroke="#ff0000" stroke-width="2" d="M540.5,-438.5C605.61,-438.5 621.89,-437.5 687,-437.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-440.5C605.74,-440.5 622.01,-439.5 687,-439.5"/>
 </g>
 <!-- W2&#45;&#45;X3 -->
 <g id="edge14" class="edge">
 <title>W2:e&#45;&#45;X3:w</title>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-424C595.13,-424 611.12,-425 675,-425"/>
-<path fill="none" stroke="#ffff00" stroke-width="2" d="M531,-426C595,-426 611,-427 675,-427"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-428C594.88,-428 610.87,-429 675,-429"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-411.5C605.74,-411.5 622.01,-412.5 687,-412.5"/>
+<path fill="none" stroke="#ffff00" stroke-width="2" d="M540.5,-413.5C605.61,-413.5 621.89,-414.5 687,-414.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-415.5C605.49,-415.5 621.76,-416.5 687,-416.5"/>
 </g>
 <!-- W2&#45;&#45;X3 -->
 <g id="edge16" class="edge">
 <title>W2:e&#45;&#45;X3:w</title>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-399C595.38,-399.03 611.36,-402.03 675,-402"/>
-<path fill="none" stroke="#00ff00" stroke-width="2" d="M531,-401C595.01,-401 610.99,-404 675,-404"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-403C594.64,-402.97 610.62,-405.97 675,-406"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-386.5C605.99,-386.53 622.24,-389.53 687,-389.5"/>
+<path fill="none" stroke="#00ff00" stroke-width="2" d="M540.5,-388.5C605.62,-388.5 621.88,-391.5 687,-391.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M540.5,-390.5C605.26,-390.47 621.51,-393.47 687,-393.5"/>
 </g>
 <!-- W3&#45;&#45;X4 -->
 <g id="edge18" class="edge">
 <title>W3:e&#45;&#45;X4:w</title>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-266C596.12,-266.26 611.87,-275.26 675,-275"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-268C595.12,-268 610.88,-277 675,-277"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-270C594.13,-269.74 609.88,-278.74 675,-279"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M543,-253.5C608.12,-253.76 623.87,-262.76 687,-262.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M543,-255.5C607.12,-255.5 622.88,-264.5 687,-264.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M543,-257.5C606.13,-257.24 621.88,-266.24 687,-266.5"/>
 </g>
 <!-- W3&#45;&#45;X4 -->
 <g id="edge20" class="edge">
 <title>W3:e&#45;&#45;X4:w</title>
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-<path fill="none" stroke="#0066ff" stroke-width="2" d="M531,-243C595.26,-243 610.74,-230 675,-230"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M531,-245C596.55,-244.53 612.03,-231.53 675,-232"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M543,-228.5C605.97,-228.97 621.45,-215.97 687,-215.5"/>
+<path fill="none" stroke="#0066ff" stroke-width="2" d="M543,-230.5C607.26,-230.5 622.74,-217.5 687,-217.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M543,-232.5C608.55,-232.03 624.03,-219.03 687,-219.5"/>
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diff --git a/examples/ex01.bom.tsv b/examples/ex01.bom.tsv
index 8af26913..0b6062de 100644
--- a/examples/ex01.bom.tsv
+++ b/examples/ex01.bom.tsv
@@ -1,3 +1,3 @@
-Item	Qty	Unit	Designators
-Connector, Molex KK 254, female, 4 pins	2		X1, X2
-Cable, Serial, 4 x 0.25 mm² shielded	0.2	m	W1
+Id	Description	Qty	Unit	Designators
+1	Cable, Serial, 4 x 0.25 mm² shielded	0.2	m	W1
+2	Connector, Molex KK 254, female, 4 pins	2		X1, X2
diff --git a/examples/ex01.gv b/examples/ex01.gv
index d5c67867..db5e6193 100644
--- a/examples/ex01.gv
+++ b/examples/ex01.gv
@@ -1,8 +1,8 @@
 graph {
-// Graph generated by WireViz 0.2
+// Graph generated by WireViz 0.3
 // https://github.com/formatc1702/WireViz
-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
+	node [fillcolor="#FFFFFF" fontname=arial height=0 margin=0 shape=none style=filled width=0]
 	edge [fontname=arial style=bold]
 	X1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
@@ -39,7 +39,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X2 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -75,7 +75,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#895956:#000000"]
 	X1:p1r:e -- W1:w1:w
 	W1:w1:e -- X2:p1l:w
@@ -110,9 +110,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:1</td>
-    <td>BN</td>
-    <td>X2:1</td>
+    <td>X1:1:GND</td>
+    <td>
+     1:BN
+    </td>
+    <td>X2:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -124,9 +126,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:2</td>
-    <td>RD</td>
-    <td>X2:2</td>
+    <td>X1:2:VCC</td>
+    <td>
+     2:RD
+    </td>
+    <td>X2:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -138,9 +142,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:3</td>
-    <td>OG</td>
-    <td>X2:4</td>
+    <td>X1:3:RX</td>
+    <td>
+     3:OG
+    </td>
+    <td>X2:4:TX</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w3" height="6">
@@ -152,9 +158,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:4</td>
-    <td>YE</td>
-    <td>X2:3</td>
+    <td>X1:4:TX</td>
+    <td>
+     4:YE
+    </td>
+    <td>X2:3:RX</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w4" height="6">
@@ -167,7 +175,7 @@ graph {
    </tr>
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:1</td>
+    <td>X1:1:GND</td>
     <td>Shield</td>
     <td><!-- s_out --></td>
    </tr>
@@ -176,5 +184,5 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style=""]
+> fillcolor="#FFFFFF" shape=box style=filled]
 }
diff --git a/examples/ex01.html b/examples/ex01.html
index f21e86ad..e0bb0a25 100644
--- a/examples/ex01.html
+++ b/examples/ex01.html
@@ -1,183 +1,209 @@
 <!DOCTYPE html>
 <html lang="en"><head>
  <meta charset="UTF-8">
- <meta name="generator" content="WireViz 0.2 - https://github.com/formatc1702/WireViz">
- <title>WireViz Diagram and BOM</title>
-</head><body style="font-family:Arial">
-<h1>Diagram</h1><!-- XML and DOCTYPE declarations from SVG file removed -->
-<!-- Generated by graphviz version 2.44.1 (20200629.0846)
+ <meta name="generator" content="WireViz 0.3 - https://github.com/formatc1702/WireViz">
+ <title>ex01</title>
+</head><body style="font-family:arial;background-color:#FFFFFF">
+<h1>ex01</h1>
+<h2>Diagram</h2>
+<!-- XML and DOCTYPE declarations from SVG file removed -->
+<!-- Generated by graphviz version 2.49.0 (20210828.1703)
  -->
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- viewBox="0.00 0.00 931.00 232.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<svg width="943pt" height="232pt"
+ viewBox="0.00 0.00 943.00 232.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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-<polygon fill="white" stroke="transparent" points="-4,4 -4,-228 927,-228 927,4 -4,4"/>
+<polygon fill="#ffffff" stroke="transparent" points="-4,4 -4,-228 939,-228 939,4 -4,4"/>
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 <title>X1</title>
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-<polygon fill="none" stroke="black" points="93,-145 93,-168 143,-168 143,-145 93,-145"/>
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-<polygon fill="none" stroke="black" points="143,-145 143,-168 182,-168 182,-145 143,-145"/>
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-<polygon fill="none" stroke="black" points="0,-122 0,-145 103,-145 103,-122 0,-122"/>
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-<polygon fill="none" stroke="black" points="103,-122 103,-145 182,-145 182,-122 103,-122"/>
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-<text text-anchor="start" x="138.5" y="-60.8" font-family="arial" font-size="14.00">4</text>
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+<polygon fill="none" stroke="black" points="0.5,-145 0.5,-168 96.5,-168 96.5,-145 0.5,-145"/>
+<text text-anchor="start" x="4.5" y="-152.8" font-family="arial" font-size="14.00">Molex KK 254</text>
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+<text text-anchor="start" x="143" y="-129.8" font-family="arial" font-size="14.00">1</text>
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+<text text-anchor="start" x="143" y="-106.8" font-family="arial" font-size="14.00">2</text>
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+<text text-anchor="start" x="143" y="-83.8" font-family="arial" font-size="14.00">3</text>
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+<text text-anchor="start" x="44.5" y="-60.8" font-family="arial" font-size="14.00">TX</text>
+<polygon fill="none" stroke="black" points="106.5,-53 106.5,-76 187.5,-76 187.5,-53 106.5,-53"/>
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-<text text-anchor="start" x="396.5" y="-185.8" font-family="arial" font-size="14.00">0.25 mm² (24 AWG)</text>
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-<text text-anchor="start" x="528.5" y="-185.8" font-family="arial" font-size="14.00">+ S</text>
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-<text text-anchor="start" x="368" y="-5.8" font-family="arial" font-size="14.00"> </text>
+<polygon fill="#ffffff" stroke="black" points="604,-224 331,-224 331,0 604,0 604,-224"/>
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+<text text-anchor="start" x="335.5" y="-185.8" font-family="arial" font-size="14.00">Serial</text>
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+<text text-anchor="start" x="402.5" y="-185.8" font-family="arial" font-size="14.00">0.25 mm² (24 AWG)</text>
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+<text text-anchor="start" x="534.5" y="-185.8" font-family="arial" font-size="14.00">+ S</text>
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+<text text-anchor="start" x="564.5" y="-185.8" font-family="arial" font-size="14.00">0.2 m</text>
+<text text-anchor="start" x="374.5" y="-164.8" font-family="arial" font-size="14.00"> </text>
+<text text-anchor="start" x="344.5" y="-145.8" font-family="arial" font-size="14.00">X1:1:GND</text>
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+<text text-anchor="start" x="785.5" y="-62.8" font-family="arial" font-size="14.00">4</text>
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+<text text-anchor="start" x="874" y="-62.8" font-family="arial" font-size="14.00">TX</text>
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 <!-- W1&#45;&#45;X2 -->
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 <title>W1:e&#45;&#45;X2:w</title>
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 <!-- W1&#45;&#45;X2 -->
 <g id="edge4" class="edge">
 <title>W1:e&#45;&#45;X2:w</title>
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-<path fill="none" stroke="#000000" stroke-width="2" d="M597,-114C661,-114 677,-114 741,-114"/>
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 <!-- W1&#45;&#45;X2 -->
 <g id="edge6" class="edge">
 <title>W1:e&#45;&#45;X2:w</title>
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-<path fill="none" stroke="#000000" stroke-width="2" d="M597,-89C663.32,-88.14 677.96,-67.14 741,-68"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M604,-85C667.04,-85.86 681.68,-64.86 748,-64"/>
+<path fill="none" stroke="#ff8000" stroke-width="2" d="M604,-87C668.68,-87 683.32,-66 748,-66"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M604,-89C670.32,-88.14 684.96,-67.14 748,-68"/>
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 <!-- W1&#45;&#45;X2 -->
 <g id="edge8" class="edge">
 <title>W1:e&#45;&#45;X2:w</title>
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-<path fill="none" stroke="#000000" stroke-width="2" d="M597,-64C660.33,-62.91 674.1,-89.91 741,-91"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M604,-60C670.9,-61.09 684.67,-88.09 748,-87"/>
+<path fill="none" stroke="#ffff00" stroke-width="2" d="M604,-62C669.12,-62 682.88,-89 748,-89"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M604,-64C667.33,-62.91 681.1,-89.91 748,-91"/>
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 </g>
 </svg>
diff --git a/examples/ex02.bom.tsv b/examples/ex02.bom.tsv
index 67cb7f0f..8cd97d83 100644
--- a/examples/ex02.bom.tsv
+++ b/examples/ex02.bom.tsv
@@ -1,5 +1,5 @@
-Item	Qty	Unit	Designators
-Connector, Molex Micro-Fit, female, 2 pins	3		X2, X3, X4
-Connector, Molex Micro-Fit, male, 2 pins	1		X1
-Cable, 2 x 0.25 mm²	0.4	m	W1, W2
-Cable, 2 x 20 AWG	0.2	m	W3
+Id	Description	Qty	Unit	Designators
+1	Cable, 2 x 0.25 mm²	0.4	m	W1, W2
+2	Cable, 2 x 20 AWG	0.2	m	W3
+3	Connector, Molex Micro-Fit, female, 2 pins	3		X2, X3, X4
+4	Connector, Molex Micro-Fit, male, 2 pins	1		X1
diff --git a/examples/ex02.gv b/examples/ex02.gv
index 66e29586..88eb93d4 100644
--- a/examples/ex02.gv
+++ b/examples/ex02.gv
@@ -1,8 +1,8 @@
 graph {
-// Graph generated by WireViz 0.2
+// Graph generated by WireViz 0.3
 // https://github.com/formatc1702/WireViz
-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
+	node [fillcolor="#FFFFFF" fontname=arial height=0 margin=0 shape=none style=filled width=0]
 	edge [fontname=arial style=bold]
 	X1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
@@ -31,7 +31,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X2 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -59,7 +59,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X3 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -87,7 +87,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X4 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -115,7 +115,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#000000:#000000"]
 	X1:p1r:e -- W1:w1:w
 	W1:w1:e -- X2:p1l:w
@@ -140,9 +140,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:1</td>
-    <td>BK</td>
-    <td>X2:1</td>
+    <td>X1:1:GND</td>
+    <td>
+     1:BK
+    </td>
+    <td>X2:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -154,9 +156,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:2</td>
-    <td>RD</td>
-    <td>X2:2</td>
+    <td>X1:2:VCC</td>
+    <td>
+     2:RD
+    </td>
+    <td>X2:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -171,7 +175,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style=""]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#000000:#000000"]
 	X1:p1r:e -- W2:w1:w
 	W2:w1:e -- X3:p1l:w
@@ -196,9 +200,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:1</td>
-    <td>BK</td>
-    <td>X3:1</td>
+    <td>X1:1:GND</td>
+    <td>
+     1:BK
+    </td>
+    <td>X3:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -210,9 +216,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:2</td>
-    <td>RD</td>
-    <td>X3:2</td>
+    <td>X1:2:VCC</td>
+    <td>
+     2:RD
+    </td>
+    <td>X3:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -227,7 +235,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style=""]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#000000:#000000"]
 	X1:p1r:e -- W3:w1:w
 	W3:w1:e -- X4:p1l:w
@@ -252,9 +260,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:1</td>
-    <td>BK</td>
-    <td>X4:1</td>
+    <td>X1:1:GND</td>
+    <td>
+     1:BK
+    </td>
+    <td>X4:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -266,9 +276,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:2</td>
-    <td>RD</td>
-    <td>X4:2</td>
+    <td>X1:2:VCC</td>
+    <td>
+     2:RD
+    </td>
+    <td>X4:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -283,5 +295,5 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style=""]
+> fillcolor="#FFFFFF" shape=box style=filled]
 }
diff --git a/examples/ex02.html b/examples/ex02.html
index 7067bb6a..b0100712 100644
--- a/examples/ex02.html
+++ b/examples/ex02.html
@@ -1,266 +1,306 @@
 <!DOCTYPE html>
 <html lang="en"><head>
  <meta charset="UTF-8">
- <meta name="generator" content="WireViz 0.2 - https://github.com/formatc1702/WireViz">
- <title>WireViz Diagram and BOM</title>
-</head><body style="font-family:Arial">
-<h1>Diagram</h1><!-- XML and DOCTYPE declarations from SVG file removed -->
-<!-- Generated by graphviz version 2.44.1 (20200629.0846)
+ <meta name="generator" content="WireViz 0.3 - https://github.com/formatc1702/WireViz">
+ <title>ex02</title>
+</head><body style="font-family:arial;background-color:#FFFFFF">
+<h1>ex02</h1>
+<h2>Diagram</h2>
+<!-- XML and DOCTYPE declarations from SVG file removed -->
+<!-- Generated by graphviz version 2.49.0 (20210828.1703)
  -->
 <!-- Pages: 1 -->
-<svg width="865pt" height="458pt"
- viewBox="0.00 0.00 865.00 458.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<svg width="881pt" height="458pt"
+ viewBox="0.00 0.00 881.00 458.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
 <g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 454)">
-<polygon fill="white" stroke="transparent" points="-4,4 -4,-454 861,-454 861,4 -4,4"/>
+<polygon fill="#ffffff" stroke="transparent" points="-4,4 -4,-454 877,-454 877,4 -4,4"/>
 <!-- X1 -->
 <g id="node1" class="node">
 <title>X1</title>
-<polygon fill="white" stroke="transparent" points="180,-262 0,-262 0,-170 180,-170 180,-262"/>
-<polygon fill="none" stroke="black" points="0,-239 0,-262 180,-262 180,-239 0,-239"/>
-<text text-anchor="start" x="81.5" y="-246.8" font-family="arial" font-size="14.00">X1</text>
-<polygon fill="none" stroke="black" points="0,-216 0,-239 102,-239 102,-216 0,-216"/>
-<text text-anchor="start" x="4" y="-223.8" font-family="arial" font-size="14.00">Molex Micro&#45;Fit</text>
-<polygon fill="none" stroke="black" points="102,-216 102,-239 141,-239 141,-216 102,-216"/>
-<text text-anchor="start" x="106" y="-223.8" font-family="arial" font-size="14.00">male</text>
-<polygon fill="none" stroke="black" points="141,-216 141,-239 180,-239 180,-216 141,-216"/>
-<text text-anchor="start" x="145" y="-223.8" font-family="arial" font-size="14.00">2&#45;pin</text>
-<polygon fill="none" stroke="black" points="0,-193 0,-216 102,-216 102,-193 0,-193"/>
-<text text-anchor="start" x="35.5" y="-200.8" font-family="arial" font-size="14.00">GND</text>
-<polygon fill="none" stroke="black" points="102,-193 102,-216 180,-216 180,-193 102,-193"/>
-<text text-anchor="start" x="137" y="-200.8" font-family="arial" font-size="14.00">1</text>
-<polygon fill="none" stroke="black" points="0,-170 0,-193 102,-193 102,-170 0,-170"/>
-<text text-anchor="start" x="36.5" y="-177.8" font-family="arial" font-size="14.00">VCC</text>
-<polygon fill="none" stroke="black" points="102,-170 102,-193 180,-193 180,-170 102,-170"/>
-<text text-anchor="start" x="137" y="-177.8" font-family="arial" font-size="14.00">2</text>
+<polygon fill="#ffffff" stroke="black" points="183,-262 0,-262 0,-170 183,-170 183,-262"/>
+<polygon fill="none" stroke="black" points="0.5,-239 0.5,-262 183.5,-262 183.5,-239 0.5,-239"/>
+<text text-anchor="start" x="83" y="-246.8" font-family="arial" font-size="14.00">X1</text>
+<polygon fill="none" stroke="black" points="0.5,-216 0.5,-239 104.5,-239 104.5,-216 0.5,-216"/>
+<text text-anchor="start" x="4.5" y="-223.8" font-family="arial" font-size="14.00">Molex Micro&#45;Fit</text>
+<polygon fill="none" stroke="black" points="104.5,-216 104.5,-239 143.5,-239 143.5,-216 104.5,-216"/>
+<text text-anchor="start" x="108.5" y="-223.8" font-family="arial" font-size="14.00">male</text>
+<polygon fill="none" stroke="black" points="143.5,-216 143.5,-239 183.5,-239 183.5,-216 143.5,-216"/>
+<text text-anchor="start" x="147.5" y="-223.8" font-family="arial" font-size="14.00">2&#45;pin</text>
+<polygon fill="none" stroke="black" points="0.5,-193 0.5,-216 104.5,-216 104.5,-193 0.5,-193"/>
+<text text-anchor="start" x="36.5" y="-200.8" font-family="arial" font-size="14.00">GND</text>
+<polygon fill="none" stroke="black" points="104.5,-193 104.5,-216 183.5,-216 183.5,-193 104.5,-193"/>
+<text text-anchor="start" x="140" y="-200.8" font-family="arial" font-size="14.00">1</text>
+<polygon fill="none" stroke="black" points="0.5,-170 0.5,-193 104.5,-193 104.5,-170 0.5,-170"/>
+<text text-anchor="start" x="37.5" y="-177.8" font-family="arial" font-size="14.00">VCC</text>
+<polygon fill="none" stroke="black" points="104.5,-170 104.5,-193 183.5,-193 183.5,-170 104.5,-170"/>
+<text text-anchor="start" x="140" y="-177.8" font-family="arial" font-size="14.00">2</text>
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 <!-- W1 -->
 <g id="node5" class="node">
 <title>W1</title>
-<polygon fill="none" stroke="black" points="522,-450 324,-450 324,-316 522,-316 522,-450"/>
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-<text text-anchor="start" x="412" y="-434.8" font-family="arial" font-size="14.00">W1</text>
-<polygon fill="none" stroke="black" points="324,-404 324,-427 347,-427 347,-404 324,-404"/>
-<text text-anchor="start" x="328" y="-411.8" font-family="arial" font-size="14.00">2x</text>
-<polygon fill="none" stroke="black" points="347,-404 347,-427 479,-427 479,-404 347,-404"/>
-<text text-anchor="start" x="351" y="-411.8" font-family="arial" font-size="14.00">0.25 mm² (24 AWG)</text>
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-<text text-anchor="start" x="483" y="-411.8" font-family="arial" font-size="14.00">0.2 m</text>
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-<text text-anchor="start" x="414" y="-371.8" font-family="arial" font-size="14.00">BK</text>
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-<text text-anchor="start" x="356.5" y="-321.8" font-family="arial" font-size="14.00"> </text>
+<polygon fill="#ffffff" stroke="black" points="534,-450 327,-450 327,-316 534,-316 534,-450"/>
+<polygon fill="none" stroke="black" points="327.5,-427 327.5,-450 534.5,-450 534.5,-427 327.5,-427"/>
+<text text-anchor="start" x="420.5" y="-434.8" font-family="arial" font-size="14.00">W1</text>
+<polygon fill="none" stroke="black" points="327.5,-404 327.5,-427 353.5,-427 353.5,-404 327.5,-404"/>
+<text text-anchor="start" x="333" y="-411.8" font-family="arial" font-size="14.00">2x</text>
+<polygon fill="none" stroke="black" points="353.5,-404 353.5,-427 488.5,-427 488.5,-404 353.5,-404"/>
+<text text-anchor="start" x="359" y="-411.8" font-family="arial" font-size="14.00">0.25 mm² (24 AWG)</text>
+<polygon fill="none" stroke="black" points="488.5,-404 488.5,-427 534.5,-427 534.5,-404 488.5,-404"/>
+<text text-anchor="start" x="493.5" y="-411.8" font-family="arial" font-size="14.00">0.2 m</text>
+<text text-anchor="start" x="359.5" y="-390.8" font-family="arial" font-size="14.00"> </text>
+<text text-anchor="start" x="329.5" y="-371.8" font-family="arial" font-size="14.00">X1:1:GND</text>
+<text text-anchor="start" x="398" y="-371.8" font-family="arial" font-size="14.00"> &#160;&#160;&#160;&#160;1:BK &#160;&#160;&#160;</text>
+<text text-anchor="start" x="468.5" y="-371.8" font-family="arial" font-size="14.00">X2:1:GND</text>
+<polygon fill="#000000" stroke="transparent" points="327.5,-364 327.5,-366 534.5,-366 534.5,-364 327.5,-364"/>
+<polygon fill="#000000" stroke="transparent" points="327.5,-362 327.5,-364 534.5,-364 534.5,-362 327.5,-362"/>
+<polygon fill="#000000" stroke="transparent" points="327.5,-360 327.5,-362 534.5,-362 534.5,-360 327.5,-360"/>
+<text text-anchor="start" x="330" y="-346.8" font-family="arial" font-size="14.00">X1:2:VCC</text>
+<text text-anchor="start" x="397.5" y="-346.8" font-family="arial" font-size="14.00"> &#160;&#160;&#160;&#160;2:RD &#160;&#160;&#160;</text>
+<text text-anchor="start" x="469" y="-346.8" font-family="arial" font-size="14.00">X2:2:VCC</text>
+<polygon fill="#000000" stroke="transparent" points="327.5,-339 327.5,-341 534.5,-341 534.5,-339 327.5,-339"/>
+<polygon fill="#ff0000" stroke="transparent" points="327.5,-337 327.5,-339 534.5,-339 534.5,-337 327.5,-337"/>
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+<text text-anchor="start" x="359.5" y="-321.8" font-family="arial" font-size="14.00"> </text>
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-<path fill="none" stroke="#000000" stroke-width="2" d="M180,-206C273.42,-203.44 226.74,-362.44 324,-365"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M183,-202C280.26,-204.56 233.58,-363.56 327,-361"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M183,-204C278.34,-204 231.66,-363 327,-363"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M183,-206C276.42,-203.44 229.74,-362.44 327,-365"/>
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 <title>X1:e&#45;&#45;W1:w</title>
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 <g id="node6" class="node">
 <title>W2</title>
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-<text text-anchor="start" x="351" y="-253.8" font-family="arial" font-size="14.00">0.25 mm² (24 AWG)</text>
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-<text text-anchor="start" x="483" y="-253.8" font-family="arial" font-size="14.00">0.2 m</text>
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 <title>X1:e&#45;&#45;W2:w</title>
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-<path fill="none" stroke="#000000" stroke-width="2" d="M180,-204C244,-204 260,-205 324,-205"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M180,-206C243.88,-206 259.87,-207 324,-207"/>
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+<path fill="none" stroke="#000000" stroke-width="2" d="M183,-204C247,-204 263,-205 327,-205"/>
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 <!-- X1&#45;&#45;W2 -->
 <g id="edge7" class="edge">
 <title>X1:e&#45;&#45;W2:w</title>
-<path fill="none" stroke="#000000" stroke-width="2" d="M180,-179C243.88,-179 259.87,-178 324,-178"/>
-<path fill="none" stroke="#ff0000" stroke-width="2" d="M180,-181C244,-181 260,-180 324,-180"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M180,-183C244.13,-183 260.12,-182 324,-182"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M183,-179C246.88,-179 262.87,-178 327,-178"/>
+<path fill="none" stroke="#ff0000" stroke-width="2" d="M183,-181C247,-181 263,-180 327,-180"/>
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-<polygon fill="none" stroke="black" points="324,-88 324,-111 347,-111 347,-88 324,-88"/>
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-<text text-anchor="start" x="351" y="-95.8" font-family="arial" font-size="14.00">20 AWG (0.75 mm²)</text>
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-<polygon fill="#000000" stroke="transparent" points="324,-23 324,-25 522,-25 522,-23 324,-23"/>
-<polygon fill="#ff0000" stroke="transparent" points="324,-21 324,-23 522,-23 522,-21 324,-21"/>
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+<text text-anchor="start" x="468.5" y="-55.8" font-family="arial" font-size="14.00">X4:1:GND</text>
+<polygon fill="#000000" stroke="transparent" points="327.5,-48 327.5,-50 534.5,-50 534.5,-48 327.5,-48"/>
+<polygon fill="#000000" stroke="transparent" points="327.5,-46 327.5,-48 534.5,-48 534.5,-46 327.5,-46"/>
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+<text text-anchor="start" x="330" y="-30.8" font-family="arial" font-size="14.00">X1:2:VCC</text>
+<text text-anchor="start" x="397.5" y="-30.8" font-family="arial" font-size="14.00"> &#160;&#160;&#160;&#160;2:RD &#160;&#160;&#160;</text>
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+<polygon fill="#000000" stroke="transparent" points="327.5,-23 327.5,-25 534.5,-25 534.5,-23 327.5,-23"/>
+<polygon fill="#ff0000" stroke="transparent" points="327.5,-21 327.5,-23 534.5,-23 534.5,-21 327.5,-21"/>
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 <title>X1:e&#45;&#45;W3:w</title>
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 <!-- X1&#45;&#45;W3 -->
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+<polygon fill="#ff0000" stroke="transparent" points="327.5,-337 327.5,-339 534.5,-339 534.5,-337 327.5,-337"/>
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 <title>X1:e&#45;&#45;W1:w</title>
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 <title>X1:e&#45;&#45;W1:w</title>
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 <title>X1:e&#45;&#45;W2:w</title>
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+<path fill="none" stroke="#000000" stroke-width="2" d="M534,-182C597.88,-182 613.87,-183 678,-183"/>
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diff --git a/examples/ex03.bom.tsv b/examples/ex03.bom.tsv
index 98d3491e..5bda765a 100644
--- a/examples/ex03.bom.tsv
+++ b/examples/ex03.bom.tsv
@@ -1,5 +1,5 @@
-Item	Qty	Unit	Designators
-Connector, Molex Micro-Fit, female, 2 pins	3		X2, X3, X4
-Connector, Molex Micro-Fit, male, 2 pins	1		X1
-Wire, 0.25 mm², BK	0.6	m	W1
-Wire, 0.25 mm², RD	0.6	m	W1
+Id	Description	Qty	Unit	Designators
+1	Connector, Molex Micro-Fit, female, 2 pins	3		X2, X3, X4
+2	Connector, Molex Micro-Fit, male, 2 pins	1		X1
+3	Wire, 0.25 mm², BK	0.6	m	W1
+4	Wire, 0.25 mm², RD	0.6	m	W1
diff --git a/examples/ex03.gv b/examples/ex03.gv
index 72cfc2da..b0a19653 100644
--- a/examples/ex03.gv
+++ b/examples/ex03.gv
@@ -1,8 +1,8 @@
 graph {
-// Graph generated by WireViz 0.2
+// Graph generated by WireViz 0.3
 // https://github.com/formatc1702/WireViz
-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
+	node [fillcolor="#FFFFFF" fontname=arial height=0 margin=0 shape=none style=filled width=0]
 	edge [fontname=arial style=bold]
 	X1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
@@ -31,7 +31,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X2 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -59,7 +59,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X3 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -87,7 +87,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X4 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -115,7 +115,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#000000:#000000"]
 	X1:p1r:e -- W1:w1:w
 	W1:w1:e -- X2:p1l:w
@@ -152,9 +152,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:1</td>
-    <td>BK</td>
-    <td>X2:1</td>
+    <td>X1:1:GND</td>
+    <td>
+     BK
+    </td>
+    <td>X2:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -166,9 +168,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:2</td>
-    <td>RD</td>
-    <td>X2:2</td>
+    <td>X1:2:VCC</td>
+    <td>
+     RD
+    </td>
+    <td>X2:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -180,9 +184,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:1</td>
-    <td>BK</td>
-    <td>X3:1</td>
+    <td>X1:1:GND</td>
+    <td>
+     BK
+    </td>
+    <td>X3:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w3" height="6">
@@ -194,9 +200,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:2</td>
-    <td>RD</td>
-    <td>X3:2</td>
+    <td>X1:2:VCC</td>
+    <td>
+     RD
+    </td>
+    <td>X3:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w4" height="6">
@@ -208,9 +216,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:1</td>
-    <td>BK</td>
-    <td>X4:1</td>
+    <td>X1:1:GND</td>
+    <td>
+     BK
+    </td>
+    <td>X4:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w5" height="6">
@@ -222,9 +232,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:2</td>
-    <td>RD</td>
-    <td>X4:2</td>
+    <td>X1:2:VCC</td>
+    <td>
+     RD
+    </td>
+    <td>X4:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w6" height="6">
@@ -239,5 +251,5 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style="filled,dashed"]
+> fillcolor="#FFFFFF" shape=box style="filled,dashed"]
 }
diff --git a/examples/ex03.html b/examples/ex03.html
index dba9e945..a37e9e99 100644
--- a/examples/ex03.html
+++ b/examples/ex03.html
@@ -1,236 +1,276 @@
 <!DOCTYPE html>
 <html lang="en"><head>
  <meta charset="UTF-8">
- <meta name="generator" content="WireViz 0.2 - https://github.com/formatc1702/WireViz">
- <title>WireViz Diagram and BOM</title>
-</head><body style="font-family:Arial">
-<h1>Diagram</h1><!-- XML and DOCTYPE declarations from SVG file removed -->
-<!-- Generated by graphviz version 2.44.1 (20200629.0846)
+ <meta name="generator" content="WireViz 0.3 - https://github.com/formatc1702/WireViz">
+ <title>ex03</title>
+</head><body style="font-family:arial;background-color:#FFFFFF">
+<h1>ex03</h1>
+<h2>Diagram</h2>
+<!-- XML and DOCTYPE declarations from SVG file removed -->
+<!-- Generated by graphviz version 2.49.0 (20210828.1703)
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- viewBox="0.00 0.00 865.00 332.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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+<path fill="none" stroke="#000000" stroke-width="2" d="M526,-203C594.22,-201.11 597.78,-266.11 670,-268"/>
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 <g id="edge12" class="edge">
 <title>W1:e&#45;&#45;X4:w</title>
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diff --git a/examples/ex04.bom.tsv b/examples/ex04.bom.tsv
index edee58d9..25de3330 100644
--- a/examples/ex04.bom.tsv
+++ b/examples/ex04.bom.tsv
@@ -1,8 +1,8 @@
-Item	Qty	Unit	Designators
-Connector, Crimp ferrule	12		
-Wire, 0.25 mm², BN	0.2	m	W1
-Wire, 0.25 mm², BU	0.2	m	W1
-Wire, 0.25 mm², GN	0.2	m	W1
-Wire, 0.25 mm², OG	0.2	m	W1
-Wire, 0.25 mm², RD	0.2	m	W1
-Wire, 0.25 mm², YE	0.2	m	W1
+Id	Description	Qty	Unit	Designators
+1	Connector, Crimp ferrule	12		
+2	Wire, 0.25 mm², BN	0.2	m	W1
+3	Wire, 0.25 mm², BU	0.2	m	W1
+4	Wire, 0.25 mm², GN	0.2	m	W1
+5	Wire, 0.25 mm², OG	0.2	m	W1
+6	Wire, 0.25 mm², RD	0.2	m	W1
+7	Wire, 0.25 mm², YE	0.2	m	W1
diff --git a/examples/ex04.gv b/examples/ex04.gv
index 0d34f1c3..f0c3b371 100644
--- a/examples/ex04.gv
+++ b/examples/ex04.gv
@@ -1,8 +1,8 @@
 graph {
-// Graph generated by WireViz 0.2
+// Graph generated by WireViz 0.3
 // https://github.com/formatc1702/WireViz
-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
+	node [fillcolor="#FFFFFF" fontname=arial height=0 margin=0 shape=none style=filled width=0]
 	edge [fontname=arial style=bold]
 	_ferrule_crimp_1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
@@ -12,7 +12,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	_ferrule_crimp_2 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -21,7 +21,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	_ferrule_crimp_3 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -30,7 +30,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	_ferrule_crimp_4 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -39,7 +39,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	_ferrule_crimp_5 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -48,7 +48,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	_ferrule_crimp_6 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -57,7 +57,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	_ferrule_crimp_7 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -66,7 +66,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	_ferrule_crimp_8 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -75,7 +75,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	_ferrule_crimp_9 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -84,7 +84,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	_ferrule_crimp_10 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -93,7 +93,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	_ferrule_crimp_11 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -102,7 +102,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	_ferrule_crimp_12 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -111,7 +111,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#895956:#000000"]
 	_ferrule_crimp_1:e -- W1:w1:w
 	W1:w1:e -- _ferrule_crimp_7:w
@@ -149,7 +149,9 @@ graph {
    <tr><td>&nbsp;</td></tr>
    <tr>
     <td></td>
-    <td>BN</td>
+    <td>
+     BN
+    </td>
     <td></td>
    </tr>
    <tr>
@@ -163,7 +165,9 @@ graph {
    </tr>
    <tr>
     <td></td>
-    <td>RD</td>
+    <td>
+     RD
+    </td>
     <td></td>
    </tr>
    <tr>
@@ -177,7 +181,9 @@ graph {
    </tr>
    <tr>
     <td></td>
-    <td>OG</td>
+    <td>
+     OG
+    </td>
     <td></td>
    </tr>
    <tr>
@@ -191,7 +197,9 @@ graph {
    </tr>
    <tr>
     <td></td>
-    <td>YE</td>
+    <td>
+     YE
+    </td>
     <td></td>
    </tr>
    <tr>
@@ -205,7 +213,9 @@ graph {
    </tr>
    <tr>
     <td></td>
-    <td>GN</td>
+    <td>
+     GN
+    </td>
     <td></td>
    </tr>
    <tr>
@@ -219,7 +229,9 @@ graph {
    </tr>
    <tr>
     <td></td>
-    <td>BU</td>
+    <td>
+     BU
+    </td>
     <td></td>
    </tr>
    <tr>
@@ -235,5 +247,5 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style="filled,dashed"]
+> fillcolor="#FFFFFF" shape=box style="filled,dashed"]
 }
diff --git a/examples/ex04.html b/examples/ex04.html
index 4d746fa2..9bae2b17 100644
--- a/examples/ex04.html
+++ b/examples/ex04.html
@@ -1,224 +1,285 @@
 <!DOCTYPE html>
 <html lang="en"><head>
  <meta charset="UTF-8">
- <meta name="generator" content="WireViz 0.2 - https://github.com/formatc1702/WireViz">
- <title>WireViz Diagram and BOM</title>
-</head><body style="font-family:Arial">
-<h1>Diagram</h1><!-- XML and DOCTYPE declarations from SVG file removed -->
-<!-- Generated by graphviz version 2.44.1 (20200629.0846)
+ <meta name="generator" content="WireViz 0.3 - https://github.com/formatc1702/WireViz">
+ <title>ex04</title>
+</head><body style="font-family:arial;background-color:#FFFFFF">
+<h1>ex04</h1>
+<h2>Diagram</h2>
+<!-- XML and DOCTYPE declarations from SVG file removed -->
+<!-- Generated by graphviz version 2.49.0 (20210828.1703)
  -->
 <!-- Pages: 1 -->
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- viewBox="0.00 0.00 668.00 344.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
-<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 340)">
-<polygon fill="white" stroke="transparent" points="-4,4 -4,-340 664,-340 664,4 -4,4"/>
+<svg width="673pt" height="287pt"
+ viewBox="0.00 0.00 673.00 286.50" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 282.5)">
+<polygon fill="#ffffff" stroke="transparent" points="-4,4 -4,-282.5 669,-282.5 669,4 -4,4"/>
 <!-- _ferrule_crimp_1 -->
 <g id="node1" class="node">
 <title>_ferrule_crimp_1</title>
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-<text text-anchor="start" x="4.5" y="-313.8" font-family="arial" font-size="14.00">Crimp ferrule</text>
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+<text text-anchor="start" x="4.5" y="-242.3" font-family="arial" font-size="14.00">Crimp ferrule</text>
 </g>
 <!-- W1 -->
 <g id="node13" class="node">
 <title>W1</title>
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\ No newline at end of file
+<h2>Bill of Materials</h2>
+<table style="border:1px solid #000000; font-size: 14pt; border-spacing: 0px">
+ <tr>
+  <th style="text-align:left; border:1px solid #000000; padding: 8px">Id</th>
+  <th style="text-align:left; border:1px solid #000000; padding: 8px">Description</th>
+  <th style="text-align:left; border:1px solid #000000; padding: 8px">Qty</th>
+  <th style="text-align:left; border:1px solid #000000; padding: 8px">Unit</th>
+  <th style="text-align:left; border:1px solid #000000; padding: 8px">Designators</th>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">1</td>
+  <td style="border:1px solid #000000; padding: 4px">Connector, Crimp ferrule</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">12</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">2</td>
+  <td style="border:1px solid #000000; padding: 4px">Wire, 0.25 mm&sup2;, BN</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">0.2</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W1</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">3</td>
+  <td style="border:1px solid #000000; padding: 4px">Wire, 0.25 mm&sup2;, BU</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">0.2</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W1</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">4</td>
+  <td style="border:1px solid #000000; padding: 4px">Wire, 0.25 mm&sup2;, GN</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">0.2</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W1</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">5</td>
+  <td style="border:1px solid #000000; padding: 4px">Wire, 0.25 mm&sup2;, OG</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">0.2</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W1</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">6</td>
+  <td style="border:1px solid #000000; padding: 4px">Wire, 0.25 mm&sup2;, RD</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">0.2</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W1</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">7</td>
+  <td style="border:1px solid #000000; padding: 4px">Wire, 0.25 mm&sup2;, YE</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">0.2</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W1</td>
+ </tr>
+</table>
+</body></html>
diff --git a/examples/ex04.png b/examples/ex04.png
index 81f89ba2..d4bdd8a5 100644
Binary files a/examples/ex04.png and b/examples/ex04.png differ
diff --git a/examples/ex04.svg b/examples/ex04.svg
index b6a17029..19174c3d 100644
--- a/examples/ex04.svg
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-<text text-anchor="start" x="4.5" y="-313.8" font-family="arial" font-size="14.00">Crimp ferrule</text>
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+<polygon fill="none" stroke="black" points="0.5,-234.5 0.5,-257.5 89.5,-257.5 89.5,-234.5 0.5,-234.5"/>
+<text text-anchor="start" x="4.5" y="-242.3" font-family="arial" font-size="14.00">Crimp ferrule</text>
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 <g id="node3" class="node">
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-<polygon fill="none" stroke="black" points="0.5,-126 0.5,-149 87.5,-149 87.5,-126 0.5,-126"/>
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 <g id="edge7" class="edge">
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 </g>
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 <g id="node5" class="node">
 <title>_ferrule_crimp_5</title>
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-<polygon fill="none" stroke="black" points="0.5,-66 0.5,-89 87.5,-89 87.5,-66 0.5,-66"/>
-<text text-anchor="start" x="4.5" y="-73.8" font-family="arial" font-size="14.00">Crimp ferrule</text>
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+<polygon fill="none" stroke="black" points="0.5,-46.5 0.5,-69.5 89.5,-69.5 89.5,-46.5 0.5,-46.5"/>
+<text text-anchor="start" x="4.5" y="-54.3" font-family="arial" font-size="14.00">Crimp ferrule</text>
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 <g id="edge9" class="edge">
 <title>_ferrule_crimp_5:e&#45;&#45;W1:w</title>
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 </g>
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 <g id="node6" class="node">
 <title>_ferrule_crimp_6</title>
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-<polygon fill="none" stroke="black" points="0.5,-6 0.5,-29 87.5,-29 87.5,-6 0.5,-6"/>
-<text text-anchor="start" x="4.5" y="-13.8" font-family="arial" font-size="14.00">Crimp ferrule</text>
+<polygon fill="#ffffff" stroke="black" points="89,-23 0,-23 0,0 89,0 89,-23"/>
+<polygon fill="none" stroke="black" points="0.5,0.5 0.5,-22.5 89.5,-22.5 89.5,0.5 0.5,0.5"/>
+<text text-anchor="start" x="4.5" y="-7.3" font-family="arial" font-size="14.00">Crimp ferrule</text>
 </g>
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 <g id="edge11" class="edge">
 <title>_ferrule_crimp_6:e&#45;&#45;W1:w</title>
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-<path fill="none" stroke="#000000" stroke-width="2" d="M87,-20C159.78,-17.87 154.23,-104.87 231,-107"/>
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+<path fill="none" stroke="#000000" stroke-width="2" d="M89,-13.5C155.53,-11.75 162.51,-66.75 233,-68.5"/>
 </g>
 <!-- _ferrule_crimp_7 -->
 <g id="node7" class="node">
 <title>_ferrule_crimp_7</title>
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-<polygon fill="none" stroke="black" points="573.5,-306 573.5,-329 660.5,-329 660.5,-306 573.5,-306"/>
-<text text-anchor="start" x="577.5" y="-313.8" font-family="arial" font-size="14.00">Crimp ferrule</text>
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+<polygon fill="none" stroke="black" points="576.5,-234.5 576.5,-257.5 665.5,-257.5 665.5,-234.5 576.5,-234.5"/>
+<text text-anchor="start" x="580.5" y="-242.3" font-family="arial" font-size="14.00">Crimp ferrule</text>
 </g>
 <!-- _ferrule_crimp_8 -->
 <g id="node8" class="node">
 <title>_ferrule_crimp_8</title>
-<polygon fill="white" stroke="transparent" points="660,-276 573,-276 573,-240 660,-240 660,-276"/>
-<polygon fill="none" stroke="black" points="573.5,-246 573.5,-269 660.5,-269 660.5,-246 573.5,-246"/>
-<text text-anchor="start" x="577.5" y="-253.8" font-family="arial" font-size="14.00">Crimp ferrule</text>
+<polygon fill="#ffffff" stroke="black" points="665,-211 576,-211 576,-188 665,-188 665,-211"/>
+<polygon fill="none" stroke="black" points="576.5,-187.5 576.5,-210.5 665.5,-210.5 665.5,-187.5 576.5,-187.5"/>
+<text text-anchor="start" x="580.5" y="-195.3" font-family="arial" font-size="14.00">Crimp ferrule</text>
 </g>
 <!-- _ferrule_crimp_9 -->
 <g id="node9" class="node">
 <title>_ferrule_crimp_9</title>
-<polygon fill="white" stroke="transparent" points="660,-216 573,-216 573,-180 660,-180 660,-216"/>
-<polygon fill="none" stroke="black" points="573.5,-186 573.5,-209 660.5,-209 660.5,-186 573.5,-186"/>
-<text text-anchor="start" x="577.5" y="-193.8" font-family="arial" font-size="14.00">Crimp ferrule</text>
+<polygon fill="#ffffff" stroke="black" points="665,-164 576,-164 576,-141 665,-141 665,-164"/>
+<polygon fill="none" stroke="black" points="576.5,-140.5 576.5,-163.5 665.5,-163.5 665.5,-140.5 576.5,-140.5"/>
+<text text-anchor="start" x="580.5" y="-148.3" font-family="arial" font-size="14.00">Crimp ferrule</text>
 </g>
 <!-- _ferrule_crimp_10 -->
 <g id="node10" class="node">
 <title>_ferrule_crimp_10</title>
-<polygon fill="white" stroke="transparent" points="660,-156 573,-156 573,-120 660,-120 660,-156"/>
-<polygon fill="none" stroke="black" points="573.5,-126 573.5,-149 660.5,-149 660.5,-126 573.5,-126"/>
-<text text-anchor="start" x="577.5" y="-133.8" font-family="arial" font-size="14.00">Crimp ferrule</text>
+<polygon fill="#ffffff" stroke="black" points="665,-117 576,-117 576,-94 665,-94 665,-117"/>
+<polygon fill="none" stroke="black" points="576.5,-93.5 576.5,-116.5 665.5,-116.5 665.5,-93.5 576.5,-93.5"/>
+<text text-anchor="start" x="580.5" y="-101.3" font-family="arial" font-size="14.00">Crimp ferrule</text>
 </g>
 <!-- _ferrule_crimp_11 -->
 <g id="node11" class="node">
 <title>_ferrule_crimp_11</title>
-<polygon fill="white" stroke="transparent" points="660,-96 573,-96 573,-60 660,-60 660,-96"/>
-<polygon fill="none" stroke="black" points="573.5,-66 573.5,-89 660.5,-89 660.5,-66 573.5,-66"/>
-<text text-anchor="start" x="577.5" y="-73.8" font-family="arial" font-size="14.00">Crimp ferrule</text>
+<polygon fill="#ffffff" stroke="black" points="665,-70 576,-70 576,-47 665,-47 665,-70"/>
+<polygon fill="none" stroke="black" points="576.5,-46.5 576.5,-69.5 665.5,-69.5 665.5,-46.5 576.5,-46.5"/>
+<text text-anchor="start" x="580.5" y="-54.3" font-family="arial" font-size="14.00">Crimp ferrule</text>
 </g>
 <!-- _ferrule_crimp_12 -->
 <g id="node12" class="node">
 <title>_ferrule_crimp_12</title>
-<polygon fill="white" stroke="transparent" points="660,-36 573,-36 573,0 660,0 660,-36"/>
-<polygon fill="none" stroke="black" points="573.5,-6 573.5,-29 660.5,-29 660.5,-6 573.5,-6"/>
-<text text-anchor="start" x="577.5" y="-13.8" font-family="arial" font-size="14.00">Crimp ferrule</text>
+<polygon fill="#ffffff" stroke="black" points="665,-23 576,-23 576,0 665,0 665,-23"/>
+<polygon fill="none" stroke="black" points="576.5,0.5 576.5,-22.5 665.5,-22.5 665.5,0.5 576.5,0.5"/>
+<text text-anchor="start" x="580.5" y="-7.3" font-family="arial" font-size="14.00">Crimp ferrule</text>
 </g>
 <!-- W1&#45;&#45;_ferrule_crimp_7 -->
 <g id="edge2" class="edge">
 <title>W1:e&#45;&#45;_ferrule_crimp_7:w</title>
-<path fill="none" stroke="#000000" stroke-width="2" d="M429,-228C506,-230.14 499.99,-318.14 573,-316"/>
-<path fill="none" stroke="#895956" stroke-width="2" d="M429,-230C504,-230 498,-318 573,-318"/>
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+<path fill="none" stroke="#000000" stroke-width="2" d="M432,-193.5C498.53,-191.75 505.51,-246.75 576,-248.5"/>
 </g>
 <!-- W1&#45;&#45;_ferrule_crimp_8 -->
 <g id="edge4" class="edge">
 <title>W1:e&#45;&#45;_ferrule_crimp_8:w</title>
-<path fill="none" stroke="#000000" stroke-width="2" d="M429,-203C499.18,-204.72 506.78,-257.72 573,-256"/>
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+<path fill="none" stroke="#000000" stroke-width="2" d="M432,-168.5C495.79,-167.22 508.47,-200.22 576,-201.5"/>
 </g>
 <!-- W1&#45;&#45;_ferrule_crimp_9 -->
 <g id="edge6" class="edge">
 <title>W1:e&#45;&#45;_ferrule_crimp_9:w</title>
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+<path fill="none" stroke="#000000" stroke-width="2" d="M432,-143.5C495.04,-143.14 510.66,-154.14 576,-154.5"/>
 </g>
 <!-- W1&#45;&#45;_ferrule_crimp_10 -->
 <g id="edge8" class="edge">
 <title>W1:e&#45;&#45;_ferrule_crimp_10:w</title>
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+<path fill="none" stroke="#ffff00" stroke-width="2" d="M432,-116.5C496.19,-116.5 511.81,-105.5 576,-105.5"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M432,-118.5C497.34,-118.14 512.96,-107.14 576,-107.5"/>
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 <!-- W1&#45;&#45;_ferrule_crimp_11 -->
 <g id="edge10" class="edge">
 <title>W1:e&#45;&#45;_ferrule_crimp_11:w</title>
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+<path fill="none" stroke="#000000" stroke-width="2" d="M432,-93.5C499.53,-92.22 512.21,-59.22 576,-60.5"/>
 </g>
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 <g id="edge12" class="edge">
 <title>W1:e&#45;&#45;_ferrule_crimp_12:w</title>
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diff --git a/examples/ex05.bom.tsv b/examples/ex05.bom.tsv
index 99133286..384e4440 100644
--- a/examples/ex05.bom.tsv
+++ b/examples/ex05.bom.tsv
@@ -1,6 +1,6 @@
-Item	Qty	Unit	Designators
-Connector, Molex KK 254, female, 4 pins	3		X1, X2, X3
-Wire, I2C, 0.25 mm², PK	0.4	m	W1, W2
-Wire, I2C, 0.25 mm², TQ	0.4	m	W1, W2
-Wire, I2C, 0.25 mm², VT	0.4	m	W1, W2
-Wire, I2C, 0.25 mm², YE	0.4	m	W1, W2
+Id	Description	Qty	Unit	Designators
+1	Connector, Molex KK 254, female, 4 pins	3		X1, X2, X3
+2	Wire, I2C, 0.25 mm², PK	0.4	m	W1, W2
+3	Wire, I2C, 0.25 mm², TQ	0.4	m	W1, W2
+4	Wire, I2C, 0.25 mm², VT	0.4	m	W1, W2
+5	Wire, I2C, 0.25 mm², YE	0.4	m	W1, W2
diff --git a/examples/ex05.gv b/examples/ex05.gv
index 51f2e155..ebecf91e 100644
--- a/examples/ex05.gv
+++ b/examples/ex05.gv
@@ -1,8 +1,8 @@
 graph {
-// Graph generated by WireViz 0.2
+// Graph generated by WireViz 0.3
 // https://github.com/formatc1702/WireViz
-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
+	node [fillcolor="#FFFFFF" fontname=arial height=0 margin=0 shape=none style=filled width=0]
 	edge [fontname=arial style=bold]
 	X1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
@@ -39,7 +39,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X2 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -79,7 +79,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X3 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -115,7 +115,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#ff66cc:#000000"]
 	X1:p1r:e -- W1:w1:w
 	W1:w1:e -- X2:p1l:w
@@ -147,9 +147,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:1</td>
-    <td>PK</td>
-    <td>X2:1</td>
+    <td>X1:1:GND</td>
+    <td>
+     PK
+    </td>
+    <td>X2:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -161,9 +163,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:2</td>
-    <td>TQ</td>
-    <td>X2:2</td>
+    <td>X1:2:VCC</td>
+    <td>
+     TQ
+    </td>
+    <td>X2:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -175,9 +179,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:3</td>
-    <td>YE</td>
-    <td>X2:3</td>
+    <td>X1:3:SCL</td>
+    <td>
+     YE
+    </td>
+    <td>X2:3:SCL</td>
    </tr>
    <tr>
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@@ -189,9 +195,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:4</td>
-    <td>VT</td>
-    <td>X2:4</td>
+    <td>X1:4:SDA</td>
+    <td>
+     VT
+    </td>
+    <td>X2:4:SDA</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w4" height="6">
@@ -206,7 +214,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style="filled,dashed"]
+> fillcolor="#FFFFFF" shape=box style="filled,dashed"]
 	edge [color="#000000:#ff66cc:#000000"]
 	X2:p1r:e -- W2:w1:w
 	W2:w1:e -- X3:p1l:w
@@ -238,9 +246,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X2:1</td>
-    <td>PK</td>
-    <td>X3:1</td>
+    <td>X2:1:GND</td>
+    <td>
+     PK
+    </td>
+    <td>X3:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -252,9 +262,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X2:2</td>
-    <td>TQ</td>
-    <td>X3:2</td>
+    <td>X2:2:VCC</td>
+    <td>
+     TQ
+    </td>
+    <td>X3:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -266,9 +278,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X2:3</td>
-    <td>YE</td>
-    <td>X3:3</td>
+    <td>X2:3:SCL</td>
+    <td>
+     YE
+    </td>
+    <td>X3:3:SCL</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w3" height="6">
@@ -280,9 +294,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X2:4</td>
-    <td>VT</td>
-    <td>X3:4</td>
+    <td>X2:4:SDA</td>
+    <td>
+     VT
+    </td>
+    <td>X3:4:SDA</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w4" height="6">
@@ -297,5 +313,5 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style="filled,dashed"]
+> fillcolor="#FFFFFF" shape=box style="filled,dashed"]
 }
diff --git a/examples/ex05.html b/examples/ex05.html
index 4747bd9c..8244778e 100644
--- a/examples/ex05.html
+++ b/examples/ex05.html
@@ -1,306 +1,353 @@
 <!DOCTYPE html>
 <html lang="en"><head>
  <meta charset="UTF-8">
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-<h1>Diagram</h1><!-- XML and DOCTYPE declarations from SVG file removed -->
-<!-- Generated by graphviz version 2.44.1 (20200629.0846)
+ <meta name="generator" content="WireViz 0.3 - https://github.com/formatc1702/WireViz">
+ <title>ex05</title>
+</head><body style="font-family:arial;background-color:#FFFFFF">
+<h1>ex05</h1>
+<h2>Diagram</h2>
+<!-- XML and DOCTYPE declarations from SVG file removed -->
+<!-- Generated by graphviz version 2.49.0 (20210828.1703)
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 <title>W2</title>
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 <title>X2:e&#45;&#45;W2:w</title>
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 <title>W2:e&#45;&#45;X3:w</title>
-<path fill="none" stroke="#000000" stroke-width="2" d="M1122,-20C1186.38,-20.03 1202.36,-23.03 1266,-23"/>
-<path fill="none" stroke="#8000ff" stroke-width="2" d="M1122,-22C1186.01,-22 1201.99,-25 1266,-25"/>
-<path fill="none" stroke="#000000" stroke-width="2" d="M1122,-24C1185.64,-23.97 1201.62,-26.97 1266,-27"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M1196,-20C1260.38,-20.03 1276.36,-23.03 1340,-23"/>
+<path fill="none" stroke="#8000ff" stroke-width="2" d="M1196,-22C1260.01,-22 1275.99,-25 1340,-25"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M1196,-24C1259.64,-23.97 1275.62,-26.97 1340,-27"/>
 </g>
 </g>
 </svg>
diff --git a/examples/ex05.yml b/examples/ex05.yml
index fd776f98..98a1a340 100644
--- a/examples/ex05.yml
+++ b/examples/ex05.yml
@@ -1,7 +1,7 @@
 # daisy chain, variant 1
 templates:
   - &template_con
-    type: Molex KK 254
+    type: '<a href="https://www.molex.com/molex/products/family/kk_254_rpc_connector_system">Molex KK 254</a>'
     subtype: female
     pinlabels: [GND, VCC, SCL, SDA]
   - &template_wire
diff --git a/examples/ex06.bom.tsv b/examples/ex06.bom.tsv
index 7885f329..0c3d0dd2 100644
--- a/examples/ex06.bom.tsv
+++ b/examples/ex06.bom.tsv
@@ -1,6 +1,6 @@
-Item	Qty	Unit	Designators
-Connector, Molex KK 254, female, 4 pins	6		X1, X2, X3, X4, X5, X6
-Wire, 0.25 mm², PK	1.0	m	W1, W2, W3, W4, W5
-Wire, 0.25 mm², TQ	1.0	m	W1, W2, W3, W4, W5
-Wire, 0.25 mm², VT	1.0	m	W1, W2, W3, W4, W5
-Wire, 0.25 mm², YE	1.0	m	W1, W2, W3, W4, W5
+Id	Description	Qty	Unit	Designators
+1	Connector, Molex KK 254, female, 4 pins	6		X1, X2, X3, X4, X5, X6
+2	Wire, 0.25 mm², PK	1.0	m	W1, W2, W3, W4, W5
+3	Wire, 0.25 mm², TQ	1.0	m	W1, W2, W3, W4, W5
+4	Wire, 0.25 mm², VT	1.0	m	W1, W2, W3, W4, W5
+5	Wire, 0.25 mm², YE	1.0	m	W1, W2, W3, W4, W5
diff --git a/examples/ex06.gv b/examples/ex06.gv
index b258d32a..70f4a9aa 100644
--- a/examples/ex06.gv
+++ b/examples/ex06.gv
@@ -1,8 +1,8 @@
 graph {
-// Graph generated by WireViz 0.2
+// Graph generated by WireViz 0.3
 // https://github.com/formatc1702/WireViz
-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
+	node [fillcolor="#FFFFFF" fontname=arial height=0 margin=0 shape=none style=filled width=0]
 	edge [fontname=arial style=bold]
 	X1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
@@ -39,7 +39,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X2 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -75,7 +75,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X3 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -111,7 +111,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X4 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -147,7 +147,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X5 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -183,7 +183,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X6 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -219,7 +219,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#ff66cc:#000000"]
 	X1:p1r:e -- W1:w1:w
 	W1:w1:e -- X2:p1l:w
@@ -250,9 +250,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:1</td>
-    <td>PK</td>
-    <td>X2:1</td>
+    <td>X1:1:GND</td>
+    <td>
+     PK
+    </td>
+    <td>X2:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -264,9 +266,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:2</td>
-    <td>TQ</td>
-    <td>X2:2</td>
+    <td>X1:2:VCC</td>
+    <td>
+     TQ
+    </td>
+    <td>X2:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -278,9 +282,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:3</td>
-    <td>YE</td>
-    <td>X2:3</td>
+    <td>X1:3:SCL</td>
+    <td>
+     YE
+    </td>
+    <td>X2:3:SCL</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w3" height="6">
@@ -292,9 +298,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:4</td>
-    <td>VT</td>
-    <td>X2:4</td>
+    <td>X1:4:SDA</td>
+    <td>
+     VT
+    </td>
+    <td>X2:4:SDA</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w4" height="6">
@@ -309,7 +317,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style="filled,dashed"]
+> fillcolor="#FFFFFF" shape=box style="filled,dashed"]
 	edge [color="#000000:#ff66cc:#000000"]
 	X3:p1r:e -- W2:w1:w
 	W2:w1:e -- X2:p1l:w
@@ -340,9 +348,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X3:1</td>
-    <td>PK</td>
-    <td>X2:1</td>
+    <td>X3:1:GND</td>
+    <td>
+     PK
+    </td>
+    <td>X2:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -354,9 +364,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X3:2</td>
-    <td>TQ</td>
-    <td>X2:2</td>
+    <td>X3:2:VCC</td>
+    <td>
+     TQ
+    </td>
+    <td>X2:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -368,9 +380,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X3:3</td>
-    <td>YE</td>
-    <td>X2:3</td>
+    <td>X3:3:SCL</td>
+    <td>
+     YE
+    </td>
+    <td>X2:3:SCL</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w3" height="6">
@@ -382,9 +396,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X3:4</td>
-    <td>VT</td>
-    <td>X2:4</td>
+    <td>X3:4:SDA</td>
+    <td>
+     VT
+    </td>
+    <td>X2:4:SDA</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w4" height="6">
@@ -399,7 +415,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style="filled,dashed"]
+> fillcolor="#FFFFFF" shape=box style="filled,dashed"]
 	edge [color="#000000:#ff66cc:#000000"]
 	X3:p1r:e -- W3:w1:w
 	W3:w1:e -- X4:p1l:w
@@ -430,9 +446,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X3:1</td>
-    <td>PK</td>
-    <td>X4:1</td>
+    <td>X3:1:GND</td>
+    <td>
+     PK
+    </td>
+    <td>X4:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -444,9 +462,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X3:2</td>
-    <td>TQ</td>
-    <td>X4:2</td>
+    <td>X3:2:VCC</td>
+    <td>
+     TQ
+    </td>
+    <td>X4:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -458,9 +478,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X3:3</td>
-    <td>YE</td>
-    <td>X4:3</td>
+    <td>X3:3:SCL</td>
+    <td>
+     YE
+    </td>
+    <td>X4:3:SCL</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w3" height="6">
@@ -472,9 +494,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X3:4</td>
-    <td>VT</td>
-    <td>X4:4</td>
+    <td>X3:4:SDA</td>
+    <td>
+     VT
+    </td>
+    <td>X4:4:SDA</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w4" height="6">
@@ -489,7 +513,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style="filled,dashed"]
+> fillcolor="#FFFFFF" shape=box style="filled,dashed"]
 	edge [color="#000000:#ff66cc:#000000"]
 	X5:p1r:e -- W4:w1:w
 	W4:w1:e -- X4:p1l:w
@@ -520,9 +544,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X5:1</td>
-    <td>PK</td>
-    <td>X4:1</td>
+    <td>X5:1:GND</td>
+    <td>
+     PK
+    </td>
+    <td>X4:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -534,9 +560,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X5:2</td>
-    <td>TQ</td>
-    <td>X4:2</td>
+    <td>X5:2:VCC</td>
+    <td>
+     TQ
+    </td>
+    <td>X4:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -548,9 +576,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X5:3</td>
-    <td>YE</td>
-    <td>X4:3</td>
+    <td>X5:3:SCL</td>
+    <td>
+     YE
+    </td>
+    <td>X4:3:SCL</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w3" height="6">
@@ -562,9 +592,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X5:4</td>
-    <td>VT</td>
-    <td>X4:4</td>
+    <td>X5:4:SDA</td>
+    <td>
+     VT
+    </td>
+    <td>X4:4:SDA</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w4" height="6">
@@ -579,7 +611,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style="filled,dashed"]
+> fillcolor="#FFFFFF" shape=box style="filled,dashed"]
 	edge [color="#000000:#ff66cc:#000000"]
 	X5:p1r:e -- W5:w1:w
 	W5:w1:e -- X6:p1l:w
@@ -610,9 +642,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X5:1</td>
-    <td>PK</td>
-    <td>X6:1</td>
+    <td>X5:1:GND</td>
+    <td>
+     PK
+    </td>
+    <td>X6:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -624,9 +658,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X5:2</td>
-    <td>TQ</td>
-    <td>X6:2</td>
+    <td>X5:2:VCC</td>
+    <td>
+     TQ
+    </td>
+    <td>X6:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -638,9 +674,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X5:3</td>
-    <td>YE</td>
-    <td>X6:3</td>
+    <td>X5:3:SCL</td>
+    <td>
+     YE
+    </td>
+    <td>X6:3:SCL</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w3" height="6">
@@ -652,9 +690,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X5:4</td>
-    <td>VT</td>
-    <td>X6:4</td>
+    <td>X5:4:SDA</td>
+    <td>
+     VT
+    </td>
+    <td>X6:4:SDA</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w4" height="6">
@@ -669,5 +709,5 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style="filled,dashed"]
+> fillcolor="#FFFFFF" shape=box style="filled,dashed"]
 }
diff --git a/examples/ex06.html b/examples/ex06.html
index 6bb99f00..024fd45c 100644
--- a/examples/ex06.html
+++ b/examples/ex06.html
@@ -1,666 +1,713 @@
 <!DOCTYPE html>
 <html lang="en"><head>
  <meta charset="UTF-8">
- <meta name="generator" content="WireViz 0.2 - https://github.com/formatc1702/WireViz">
- <title>WireViz Diagram and BOM</title>
-</head><body style="font-family:Arial">
-<h1>Diagram</h1><!-- XML and DOCTYPE declarations from SVG file removed -->
-<!-- Generated by graphviz version 2.44.1 (20200629.0846)
+ <meta name="generator" content="WireViz 0.3 - https://github.com/formatc1702/WireViz">
+ <title>ex06</title>
+</head><body style="font-family:arial;background-color:#FFFFFF">
+<h1>ex06</h1>
+<h2>Diagram</h2>
+<!-- XML and DOCTYPE declarations from SVG file removed -->
+<!-- Generated by graphviz version 2.49.0 (20210828.1703)
  -->
 <!-- Pages: 1 -->
-<svg width="793pt" height="1024pt"
- viewBox="0.00 0.00 793.00 1024.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<svg width="865pt" height="1024pt"
+ viewBox="0.00 0.00 865.00 1024.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
 <g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 1020)">
-<polygon fill="white" stroke="transparent" points="-4,4 -4,-1020 789,-1020 789,4 -4,4"/>
+<polygon fill="#ffffff" stroke="transparent" points="-4,4 -4,-1020 861,-1020 861,4 -4,4"/>
 <!-- X1 -->
 <g id="node1" class="node">
 <title>X1</title>
-<polygon fill="white" stroke="transparent" points="182,-984 0,-984 0,-846 182,-846 182,-984"/>
-<polygon fill="none" stroke="black" points="0,-961 0,-984 182,-984 182,-961 0,-961"/>
-<text text-anchor="start" x="82.5" y="-968.8" font-family="arial" font-size="14.00">X1</text>
-<polygon fill="none" stroke="black" points="0,-938 0,-961 93,-961 93,-938 0,-938"/>
-<text text-anchor="start" x="4" y="-945.8" font-family="arial" font-size="14.00">Molex KK 254</text>
-<polygon fill="none" stroke="black" points="93,-938 93,-961 143,-961 143,-938 93,-938"/>
-<text text-anchor="start" x="97" y="-945.8" font-family="arial" font-size="14.00">female</text>
-<polygon fill="none" stroke="black" points="143,-938 143,-961 182,-961 182,-938 143,-938"/>
-<text text-anchor="start" x="147" y="-945.8" font-family="arial" font-size="14.00">4&#45;pin</text>
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-<text text-anchor="start" x="36" y="-922.8" font-family="arial" font-size="14.00">GND</text>
-<polygon fill="none" stroke="black" points="103,-915 103,-938 182,-938 182,-915 103,-915"/>
-<text text-anchor="start" x="138.5" y="-922.8" font-family="arial" font-size="14.00">1</text>
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-<text text-anchor="start" x="38" y="-876.8" font-family="arial" font-size="14.00">SCL</text>
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-<text text-anchor="start" x="138.5" y="-876.8" font-family="arial" font-size="14.00">3</text>
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-<text text-anchor="start" x="37.5" y="-853.8" font-family="arial" font-size="14.00">SDA</text>
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-<text text-anchor="start" x="138.5" y="-853.8" font-family="arial" font-size="14.00">4</text>
+<polygon fill="#ffffff" stroke="black" points="187,-984 0,-984 0,-846 187,-846 187,-984"/>
+<polygon fill="none" stroke="black" points="0.5,-961 0.5,-984 187.5,-984 187.5,-961 0.5,-961"/>
+<text text-anchor="start" x="85" y="-968.8" font-family="arial" font-size="14.00">X1</text>
+<polygon fill="none" stroke="black" points="0.5,-938 0.5,-961 96.5,-961 96.5,-938 0.5,-938"/>
+<text text-anchor="start" x="4.5" y="-945.8" font-family="arial" font-size="14.00">Molex KK 254</text>
+<polygon fill="none" stroke="black" points="96.5,-938 96.5,-961 147.5,-961 147.5,-938 96.5,-938"/>
+<text text-anchor="start" x="100.5" y="-945.8" font-family="arial" font-size="14.00">female</text>
+<polygon fill="none" stroke="black" points="147.5,-938 147.5,-961 187.5,-961 187.5,-938 147.5,-938"/>
+<text text-anchor="start" x="151.5" y="-945.8" font-family="arial" font-size="14.00">4&#45;pin</text>
+<polygon fill="none" stroke="black" points="0.5,-915 0.5,-938 106.5,-938 106.5,-915 0.5,-915"/>
+<text text-anchor="start" x="37.5" y="-922.8" font-family="arial" font-size="14.00">GND</text>
+<polygon fill="none" stroke="black" points="106.5,-915 106.5,-938 187.5,-938 187.5,-915 106.5,-915"/>
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+  <td style="border:1px solid #000000; padding: 4px">5</td>
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+  <td style="border:1px solid #000000; padding: 4px; text-align:right">1.0</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W1, W2, W3, W4, W5</td>
+ </tr>
+</table>
+</body></html>
diff --git a/examples/ex06.png b/examples/ex06.png
index 18e8f1ef..9a0bcefc 100644
Binary files a/examples/ex06.png and b/examples/ex06.png differ
diff --git a/examples/ex06.svg b/examples/ex06.svg
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diff --git a/examples/ex07.bom.tsv b/examples/ex07.bom.tsv
index ff4b2d70..cacb779f 100644
--- a/examples/ex07.bom.tsv
+++ b/examples/ex07.bom.tsv
@@ -1,4 +1,4 @@
-Item	Qty	Unit	Designators
-Connector, D-Sub, female, 9 pins	1		X2
-Connector, TE 776164-1, female, 35 pins	1		X1
-Cable, 2 x 20 AWG	1	m	C1
+Id	Description	Qty	Unit	Designators
+1	Cable, 2 x 20 AWG	1	m	C1
+2	Connector, D-Sub, female, 9 pins	1		X2
+3	Connector, TE 776164-1, female, 35 pins	1		X1
diff --git a/examples/ex07.gv b/examples/ex07.gv
index e93d2b26..0af1417c 100644
--- a/examples/ex07.gv
+++ b/examples/ex07.gv
@@ -1,8 +1,8 @@
 graph {
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-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
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 	edge [fontname=arial style=bold]
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 <table border="0" cellspacing="0" cellpadding="0">
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  </td></tr>
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-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
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 <table border="0" cellspacing="0" cellpadding="0">
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  </td></tr>
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-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#ffff00:#000000"]
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 	C1:w1:e -- X2:p7l:w
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    <tr><td>&nbsp;</td></tr>
    <tr>
     <td>X1:5</td>
-    <td>YE</td>
+    <td>
+     1:YE
+    </td>
     <td>X2:7</td>
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    <tr>
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    </tr>
    <tr>
     <td>X1:6</td>
-    <td>GN</td>
+    <td>
+     2:GN
+    </td>
     <td>X2:2</td>
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   </table>
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-> fillcolor=white margin=0 shape=box style=""]
+> fillcolor="#FFFFFF" shape=box style=filled]
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diff --git a/examples/ex07.html b/examples/ex07.html
index 8d785003..6016a51f 100644
--- a/examples/ex07.html
+++ b/examples/ex07.html
@@ -1,110 +1,143 @@
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-<h1>Diagram</h1><!-- XML and DOCTYPE declarations from SVG file removed -->
-<!-- Generated by graphviz version 2.44.1 (20200629.0846)
+ <meta name="generator" content="WireViz 0.3 - https://github.com/formatc1702/WireViz">
+ <title>ex07</title>
+</head><body style="font-family:arial;background-color:#FFFFFF">
+<h1>ex07</h1>
+<h2>Diagram</h2>
+<!-- XML and DOCTYPE declarations from SVG file removed -->
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\ No newline at end of file
+<h2>Bill of Materials</h2>
+<table style="border:1px solid #000000; font-size: 14pt; border-spacing: 0px">
+ <tr>
+  <th style="text-align:left; border:1px solid #000000; padding: 8px">Id</th>
+  <th style="text-align:left; border:1px solid #000000; padding: 8px">Description</th>
+  <th style="text-align:left; border:1px solid #000000; padding: 8px">Qty</th>
+  <th style="text-align:left; border:1px solid #000000; padding: 8px">Unit</th>
+  <th style="text-align:left; border:1px solid #000000; padding: 8px">Designators</th>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">1</td>
+  <td style="border:1px solid #000000; padding: 4px">Cable, 2 x 20 AWG</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">1</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">C1</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">2</td>
+  <td style="border:1px solid #000000; padding: 4px">Connector, D-Sub, female, 9 pins</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">1</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px">X2</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">3</td>
+  <td style="border:1px solid #000000; padding: 4px">Connector, TE 776164-1, female, 35 pins</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">1</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px">X1</td>
+ </tr>
+</table>
+</body></html>
diff --git a/examples/ex07.png b/examples/ex07.png
index 65be34bb..29e5d09e 100644
Binary files a/examples/ex07.png and b/examples/ex07.png differ
diff --git a/examples/ex07.svg b/examples/ex07.svg
index e96072d8..02d8378f 100644
--- a/examples/ex07.svg
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+<text text-anchor="start" x="391" y="-41.3" font-family="arial" font-size="14.00"> &#160;&#160;&#160;&#160;2:GN &#160;&#160;&#160;</text>
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diff --git a/examples/ex08.bom.tsv b/examples/ex08.bom.tsv
index 3457bbb3..c0aec092 100644
--- a/examples/ex08.bom.tsv
+++ b/examples/ex08.bom.tsv
@@ -1,3 +1,3 @@
-Item	Qty	Unit	Designators
-Connector, Phone Connector, male 3.5, 3 pins	1		Key
-Cable, 3 x 24 AWG shielded	0.2	m	W1
+Id	Description	Qty	Unit	Designators
+1	Cable, 3 x 24 AWG shielded, BK	0.2	m	W1
+2	Connector, Phone Connector, male 3.5	1		Key
diff --git a/examples/ex08.gv b/examples/ex08.gv
index f7ad1568..5b302fcc 100644
--- a/examples/ex08.gv
+++ b/examples/ex08.gv
@@ -1,8 +1,8 @@
 graph {
-// Graph generated by WireViz 0.2
+// Graph generated by WireViz 0.3
 // https://github.com/formatc1702/WireViz
-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
+	node [fillcolor="#FFFFFF" fontname=arial height=0 margin=0 shape=none style=filled width=0]
 	edge [fontname=arial style=bold]
 	Key [label=<
 <table border="0" cellspacing="0" cellpadding="0">
@@ -21,15 +21,15 @@ graph {
   <table border="0" cellspacing="0" cellpadding="3" cellborder="1">
    <tr>
     <td>Dot</td>
-    <td port="pTr">T</td>
+    <td port="p1r">T</td>
    </tr>
    <tr>
     <td>Dash</td>
-    <td port="pRr">R</td>
+    <td port="p2r">R</td>
    </tr>
    <tr>
     <td>Ground</td>
-    <td port="pSr">S</td>
+    <td port="p3r">S</td>
    </tr>
   </table>
  </td></tr>
@@ -44,15 +44,15 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#ffffff:#000000"]
-	Key:pSr:e -- W1:w1:w
+	Key:p3r:e -- W1:w1:w
 	edge [color="#000000:#895956:#000000"]
-	Key:pRr:e -- W1:w2:w
+	Key:p2r:e -- W1:w2:w
 	edge [color="#000000:#00ff00:#000000"]
-	Key:pTr:e -- W1:w3:w
+	Key:p1r:e -- W1:w3:w
 	edge [color="#000000:#aaaaaa:#000000"]
-	Key:pSr:e -- W1:ws:w
+	Key:p3r:e -- W1:ws:w
 	W1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -74,8 +74,10 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>Key:S</td>
-    <td>WH</td>
+    <td>Key:S:Ground</td>
+    <td>
+     1:WH
+    </td>
     <td><!-- 1_out --></td>
    </tr>
    <tr>
@@ -88,8 +90,10 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>Key:R</td>
-    <td>BN</td>
+    <td>Key:R:Dash</td>
+    <td>
+     2:BN
+    </td>
     <td><!-- 2_out --></td>
    </tr>
    <tr>
@@ -102,8 +106,10 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>Key:T</td>
-    <td>GN</td>
+    <td>Key:T:Dot</td>
+    <td>
+     3:GN
+    </td>
     <td><!-- 3_out --></td>
    </tr>
    <tr>
@@ -117,7 +123,7 @@ graph {
    </tr>
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>Key:S</td>
+    <td>Key:S:Ground</td>
     <td>Shield</td>
     <td><!-- s_out --></td>
    </tr>
@@ -140,5 +146,5 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style=""]
+> fillcolor="#FFFFFF" shape=box style=filled]
 }
diff --git a/examples/ex08.html b/examples/ex08.html
index 99944627..de4b397b 100644
--- a/examples/ex08.html
+++ b/examples/ex08.html
@@ -1,118 +1,144 @@
 <!DOCTYPE html>
 <html lang="en"><head>
  <meta charset="UTF-8">
- <meta name="generator" content="WireViz 0.2 - https://github.com/formatc1702/WireViz">
- <title>WireViz Diagram and BOM</title>
-</head><body style="font-family:Arial">
-<h1>Diagram</h1><!-- XML and DOCTYPE declarations from SVG file removed -->
-<!-- Generated by graphviz version 2.44.1 (20200629.0846)
+ <meta name="generator" content="WireViz 0.3 - https://github.com/formatc1702/WireViz">
+ <title>ex08</title>
+</head><body style="font-family:arial;background-color:#FFFFFF">
+<h1>ex08</h1>
+<h2>Diagram</h2>
+<!-- XML and DOCTYPE declarations from SVG file removed -->
+<!-- Generated by graphviz version 2.49.0 (20210828.1703)
  -->
 <!-- Pages: 1 -->
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- viewBox="0.00 0.00 518.00 312.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<svg width="523pt" height="312pt"
+ viewBox="0.00 0.00 523.00 312.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
 <g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 308)">
-<polygon fill="white" stroke="transparent" points="-4,4 -4,-308 514,-308 514,4 -4,4"/>
+<polygon fill="#ffffff" stroke="transparent" points="-4,4 -4,-308 519,-308 519,4 -4,4"/>
 <!-- Key -->
 <g id="node1" class="node">
 <title>Key</title>
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-<polygon fill="none" stroke="black" points="0.5,-204 0.5,-227 114.5,-227 114.5,-204 0.5,-204"/>
+<polygon fill="#ffffff" stroke="black" points="179,-250 0,-250 0,-44 179,-44 179,-250"/>
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+<text text-anchor="start" x="77.5" y="-234.8" font-family="arial" font-size="14.00">Key</text>
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 <text text-anchor="start" x="4.5" y="-211.8" font-family="arial" font-size="14.00">Phone Connector</text>
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-<polyline fill="none" stroke="black" points="0.5,-67 0.5,-44 175.5,-44 175.5,-67 "/>
+<polygon fill="none" stroke="black" points="117.5,-204 117.5,-227 179.5,-227 179.5,-204 117.5,-204"/>
+<text text-anchor="start" x="121.5" y="-211.8" font-family="arial" font-size="14.00">male 3.5</text>
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+<polyline fill="none" stroke="black" points="179.5,-67 179.5,-135 0.5,-135 0.5,-67 "/>
+<image xlink:href="resources/stereo-phone-plug-TRS.png" width="171px" height="60px" preserveAspectRatio="xMinYMin meet" x="4.5" y="-131"/>
+<polyline fill="none" stroke="black" points="0.5,-67 0.5,-44 179.5,-44 179.5,-67 "/>
 <text text-anchor="start" x="23" y="-51.8" font-family="arial" font-size="14.00">Tip, Ring, and Sleeve</text>
 </g>
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 <g id="node2" class="node">
 <title>W1</title>
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-<text text-anchor="start" x="323.5" y="-265.8" font-family="arial" font-size="14.00">3x</text>
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-<text text-anchor="start" x="346.5" y="-265.8" font-family="arial" font-size="14.00">24 AWG</text>
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-<text text-anchor="start" x="406.5" y="-265.8" font-family="arial" font-size="14.00">+ S</text>
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-<text text-anchor="start" x="436.5" y="-265.8" font-family="arial" font-size="14.00">0.2 m</text>
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diff --git a/examples/ex08.png b/examples/ex08.png
index a4969d38..73bec815 100644
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-<path fill="none" stroke="#000000" stroke-width="2" d="M175,-148C241.51,-147.06 255.88,-124.06 319,-125"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M179,-144C242.12,-144.94 256.49,-121.94 323,-121"/>
+<path fill="none" stroke="#aaaaaa" stroke-width="2" d="M179,-146C243.81,-146 258.19,-123 323,-123"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M179,-148C245.51,-147.06 259.88,-124.06 323,-125"/>
 </g>
 </g>
 </svg>
diff --git a/examples/ex08.yml b/examples/ex08.yml
index eea3976a..a17583f4 100644
--- a/examples/ex08.yml
+++ b/examples/ex08.yml
@@ -28,7 +28,7 @@ cables:
 connections:
   -
     - Key: [S,R,T]
-    - W1: [1,2,3]
+    - W1: [WH,BN,GN]
   -
     - Key: S
     - W1: s
diff --git a/examples/ex09.bom.tsv b/examples/ex09.bom.tsv
index b07a1548..26362d3a 100644
--- a/examples/ex09.bom.tsv
+++ b/examples/ex09.bom.tsv
@@ -1,4 +1,4 @@
-Item	Qty	Unit	Designators
-Connector, D-Sub, male, 25 pins	1		X1
-Connector, F48, female, 48 pins	1		X2
-Cable, 12 x 0.25 mm² shielded	0.2	m	W1
+Id	Description	Qty	Unit	Designators
+1	Cable, 12 x 0.25 mm² shielded	0.2	m	W1
+2	Connector, D-Sub, male, 25 pins	1		X1
+3	Connector, F48, female, 48 pins	1		X2
diff --git a/examples/ex09.gv b/examples/ex09.gv
index b965d277..2bd338f7 100644
--- a/examples/ex09.gv
+++ b/examples/ex09.gv
@@ -1,8 +1,8 @@
 graph {
-// Graph generated by WireViz 0.2
+// Graph generated by WireViz 0.3
 // https://github.com/formatc1702/WireViz
-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
+	node [fillcolor="#FFFFFF" fontname=arial height=0 margin=0 shape=none style=filled width=0]
 	edge [fontname=arial style=bold]
 	X1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
@@ -26,7 +26,7 @@ graph {
    </tr>
    <tr>
     <td>SENSE_N_1</td>
-    <td port="p14r">14</td>
+    <td port="p2r">14</td>
    </tr>
    <tr>
     <td>SENSE_P_2</td>
@@ -34,7 +34,7 @@ graph {
    </tr>
    <tr>
     <td>SENSE_N_2</td>
-    <td port="p16r">16</td>
+    <td port="p4r">16</td>
    </tr>
    <tr>
     <td>SENSE_P_3</td>
@@ -42,7 +42,7 @@ graph {
    </tr>
    <tr>
     <td>SENSE_N_3</td>
-    <td port="p18r">18</td>
+    <td port="p6r">18</td>
    </tr>
    <tr>
     <td>SENSE_P_4</td>
@@ -50,7 +50,7 @@ graph {
    </tr>
    <tr>
     <td>SENSE_N_4</td>
-    <td port="p20r">20</td>
+    <td port="p8r">20</td>
    </tr>
    <tr>
     <td>SENSE_P_5</td>
@@ -58,7 +58,7 @@ graph {
    </tr>
    <tr>
     <td>SENSE_N_5</td>
-    <td port="p22r">22</td>
+    <td port="p10r">22</td>
    </tr>
    <tr>
     <td>SENSE_P_6</td>
@@ -66,7 +66,7 @@ graph {
    </tr>
    <tr>
     <td>SENSE_N_6</td>
-    <td port="p24r">24</td>
+    <td port="p12r">24</td>
    </tr>
    <tr>
     <td>GND</td>
@@ -75,7 +75,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X2 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -93,189 +93,189 @@ graph {
  <tr><td>
   <table border="0" cellspacing="0" cellpadding="3" cellborder="1">
    <tr>
-    <td port="pz2l">z2</td>
+    <td port="p1l">z2</td>
    </tr>
    <tr>
-    <td port="pb2l">b2</td>
+    <td port="p2l">b2</td>
    </tr>
    <tr>
-    <td port="pd2l">d2</td>
+    <td port="p3l">d2</td>
    </tr>
    <tr>
-    <td port="pz4l">z4</td>
+    <td port="p4l">z4</td>
    </tr>
    <tr>
-    <td port="pb4l">b4</td>
+    <td port="p5l">b4</td>
    </tr>
    <tr>
-    <td port="pd4l">d4</td>
+    <td port="p6l">d4</td>
    </tr>
    <tr>
-    <td port="pz6l">z6</td>
+    <td port="p7l">z6</td>
    </tr>
    <tr>
-    <td port="pb6l">b6</td>
+    <td port="p8l">b6</td>
    </tr>
    <tr>
-    <td port="pd6l">d6</td>
+    <td port="p9l">d6</td>
    </tr>
    <tr>
-    <td port="pz8l">z8</td>
+    <td port="p10l">z8</td>
    </tr>
    <tr>
-    <td port="pb8l">b8</td>
+    <td port="p11l">b8</td>
    </tr>
    <tr>
-    <td port="pd8l">d8</td>
+    <td port="p12l">d8</td>
    </tr>
    <tr>
-    <td port="pz10l">z10</td>
+    <td port="p13l">z10</td>
    </tr>
    <tr>
-    <td port="pb10l">b10</td>
+    <td port="p14l">b10</td>
    </tr>
    <tr>
-    <td port="pd10l">d10</td>
+    <td port="p15l">d10</td>
    </tr>
    <tr>
-    <td port="pz12l">z12</td>
+    <td port="p16l">z12</td>
    </tr>
    <tr>
-    <td port="pb12l">b12</td>
+    <td port="p17l">b12</td>
    </tr>
    <tr>
-    <td port="pd12l">d12</td>
+    <td port="p18l">d12</td>
    </tr>
    <tr>
-    <td port="pz14l">z14</td>
+    <td port="p19l">z14</td>
    </tr>
    <tr>
-    <td port="pb14l">b14</td>
+    <td port="p20l">b14</td>
    </tr>
    <tr>
-    <td port="pd14l">d14</td>
+    <td port="p21l">d14</td>
    </tr>
    <tr>
-    <td port="pz16l">z16</td>
+    <td port="p22l">z16</td>
    </tr>
    <tr>
-    <td port="pb16l">b16</td>
+    <td port="p23l">b16</td>
    </tr>
    <tr>
-    <td port="pd16l">d16</td>
+    <td port="p24l">d16</td>
    </tr>
    <tr>
-    <td port="pz18l">z18</td>
+    <td port="p25l">z18</td>
    </tr>
    <tr>
-    <td port="pb18l">b18</td>
+    <td port="p26l">b18</td>
    </tr>
    <tr>
-    <td port="pd18l">d18</td>
+    <td port="p27l">d18</td>
    </tr>
    <tr>
-    <td port="pz20l">z20</td>
+    <td port="p28l">z20</td>
    </tr>
    <tr>
-    <td port="pb20l">b20</td>
+    <td port="p29l">b20</td>
    </tr>
    <tr>
-    <td port="pd20l">d20</td>
+    <td port="p30l">d20</td>
    </tr>
    <tr>
-    <td port="pz22l">z22</td>
+    <td port="p31l">z22</td>
    </tr>
    <tr>
-    <td port="pb22l">b22</td>
+    <td port="p32l">b22</td>
    </tr>
    <tr>
-    <td port="pd22l">d22</td>
+    <td port="p33l">d22</td>
    </tr>
    <tr>
-    <td port="pz24l">z24</td>
+    <td port="p34l">z24</td>
    </tr>
    <tr>
-    <td port="pb24l">b24</td>
+    <td port="p35l">b24</td>
    </tr>
    <tr>
-    <td port="pd24l">d24</td>
+    <td port="p36l">d24</td>
    </tr>
    <tr>
-    <td port="pz26l">z26</td>
+    <td port="p37l">z26</td>
    </tr>
    <tr>
-    <td port="pb26l">b26</td>
+    <td port="p38l">b26</td>
    </tr>
    <tr>
-    <td port="pd26l">d26</td>
+    <td port="p39l">d26</td>
    </tr>
    <tr>
-    <td port="pz28l">z28</td>
+    <td port="p40l">z28</td>
    </tr>
    <tr>
-    <td port="pb28l">b28</td>
+    <td port="p41l">b28</td>
    </tr>
    <tr>
-    <td port="pd28l">d28</td>
+    <td port="p42l">d28</td>
    </tr>
    <tr>
-    <td port="pz30l">z30</td>
+    <td port="p43l">z30</td>
    </tr>
    <tr>
-    <td port="pb30l">b30</td>
+    <td port="p44l">b30</td>
    </tr>
    <tr>
-    <td port="pd30l">d30</td>
+    <td port="p45l">d30</td>
    </tr>
    <tr>
-    <td port="pz32l">z32</td>
+    <td port="p46l">z32</td>
    </tr>
    <tr>
-    <td port="pb32l">b32</td>
+    <td port="p47l">b32</td>
    </tr>
    <tr>
-    <td port="pd32l">d32</td>
+    <td port="p48l">d32</td>
    </tr>
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#895956:#895956:#895956:#000000"]
 	X1:p1r:e -- W1:w2:w
-	W1:w2:e -- X2:pd4l:w
+	W1:w2:e -- X2:p6l:w
 	edge [color="#000000:#ffffff:#ffffff:#ffffff:#000000"]
-	X1:p14r:e -- W1:w1:w
-	W1:w1:e -- X2:pz2l:w
+	X1:p2r:e -- W1:w1:w
+	W1:w1:e -- X2:p1l:w
 	edge [color="#000000:#ffff00:#ffff00:#ffff00:#000000"]
 	X1:p3r:e -- W1:w4:w
-	W1:w4:e -- X2:pd10l:w
+	W1:w4:e -- X2:p15l:w
 	edge [color="#000000:#00ff00:#00ff00:#00ff00:#000000"]
-	X1:p16r:e -- W1:w3:w
-	W1:w3:e -- X2:pz8l:w
+	X1:p4r:e -- W1:w3:w
+	W1:w3:e -- X2:p10l:w
 	edge [color="#000000:#ff66cc:#ff66cc:#ff66cc:#000000"]
 	X1:p5r:e -- W1:w6:w
-	W1:w6:e -- X2:pd16l:w
+	W1:w6:e -- X2:p24l:w
 	edge [color="#000000:#999999:#999999:#999999:#000000"]
-	X1:p18r:e -- W1:w5:w
-	W1:w5:e -- X2:pz14l:w
+	X1:p6r:e -- W1:w5:w
+	W1:w5:e -- X2:p19l:w
 	edge [color="#000000:#ff0000:#ff0000:#ff0000:#000000"]
 	X1:p7r:e -- W1:w8:w
-	W1:w8:e -- X2:pd20l:w
+	W1:w8:e -- X2:p30l:w
 	edge [color="#000000:#0066ff:#0066ff:#0066ff:#000000"]
-	X1:p20r:e -- W1:w7:w
-	W1:w7:e -- X2:pz18l:w
+	X1:p8r:e -- W1:w7:w
+	W1:w7:e -- X2:p25l:w
 	edge [color="#000000:#8000ff:#8000ff:#8000ff:#000000"]
 	X1:p9r:e -- W1:w10:w
-	W1:w10:e -- X2:pd26l:w
+	W1:w10:e -- X2:p39l:w
 	edge [color="#000000:#000000:#000000:#000000:#000000"]
-	X1:p22r:e -- W1:w9:w
-	W1:w9:e -- X2:pz24l:w
+	X1:p10r:e -- W1:w9:w
+	W1:w9:e -- X2:p34l:w
 	edge [color="#000000:#ff0000:#0066ff:#ff0000:#000000"]
 	X1:p11r:e -- W1:w12:w
-	W1:w12:e -- X2:pd32l:w
+	W1:w12:e -- X2:p48l:w
 	edge [color="#000000:#999999:#ff66cc:#999999:#000000"]
-	X1:p24r:e -- W1:w11:w
-	W1:w11:e -- X2:pz30l:w
+	X1:p12r:e -- W1:w11:w
+	W1:w11:e -- X2:p43l:w
 	edge [color="#000000"]
 	X1:p13r:e -- W1:ws:w
 	W1 [label=<
@@ -297,8 +297,10 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:14</td>
-    <td>WH</td>
+    <td>X1:14:SENSE_N_1</td>
+    <td>
+     1:WH
+    </td>
     <td>X2:z2</td>
    </tr>
    <tr>
@@ -313,8 +315,10 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:1</td>
-    <td>BN</td>
+    <td>X1:1:SENSE_P_1</td>
+    <td>
+     2:BN
+    </td>
     <td>X2:d4</td>
    </tr>
    <tr>
@@ -329,8 +333,10 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:16</td>
-    <td>GN</td>
+    <td>X1:16:SENSE_N_2</td>
+    <td>
+     3:GN
+    </td>
     <td>X2:z8</td>
    </tr>
    <tr>
@@ -345,8 +351,10 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:3</td>
-    <td>YE</td>
+    <td>X1:3:SENSE_P_2</td>
+    <td>
+     4:YE
+    </td>
     <td>X2:d10</td>
    </tr>
    <tr>
@@ -361,8 +369,10 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:18</td>
-    <td>GY</td>
+    <td>X1:18:SENSE_N_3</td>
+    <td>
+     5:GY
+    </td>
     <td>X2:z14</td>
    </tr>
    <tr>
@@ -377,8 +387,10 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:5</td>
-    <td>PK</td>
+    <td>X1:5:SENSE_P_3</td>
+    <td>
+     6:PK
+    </td>
     <td>X2:d16</td>
    </tr>
    <tr>
@@ -393,8 +405,10 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:20</td>
-    <td>BU</td>
+    <td>X1:20:SENSE_N_4</td>
+    <td>
+     7:BU
+    </td>
     <td>X2:z18</td>
    </tr>
    <tr>
@@ -409,8 +423,10 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:7</td>
-    <td>RD</td>
+    <td>X1:7:SENSE_P_4</td>
+    <td>
+     8:RD
+    </td>
     <td>X2:d20</td>
    </tr>
    <tr>
@@ -425,8 +441,10 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:22</td>
-    <td>BK</td>
+    <td>X1:22:SENSE_N_5</td>
+    <td>
+     9:BK
+    </td>
     <td>X2:z24</td>
    </tr>
    <tr>
@@ -441,8 +459,10 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:9</td>
-    <td>VT</td>
+    <td>X1:9:SENSE_P_5</td>
+    <td>
+     10:VT
+    </td>
     <td>X2:d26</td>
    </tr>
    <tr>
@@ -457,8 +477,10 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:24</td>
-    <td>GYPK</td>
+    <td>X1:24:SENSE_N_6</td>
+    <td>
+     11:GYPK
+    </td>
     <td>X2:z30</td>
    </tr>
    <tr>
@@ -473,8 +495,10 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:11</td>
-    <td>RDBU</td>
+    <td>X1:11:SENSE_P_6</td>
+    <td>
+     12:RDBU
+    </td>
     <td>X2:d32</td>
    </tr>
    <tr>
@@ -490,7 +514,7 @@ graph {
    </tr>
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:13</td>
+    <td>X1:13:GND</td>
     <td>Shield</td>
     <td><!-- s_out --></td>
    </tr>
@@ -499,5 +523,5 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style=""]
+> fillcolor="#FFFFFF" shape=box style=filled]
 }
diff --git a/examples/ex09.html b/examples/ex09.html
index de91d70d..8e19d085 100644
--- a/examples/ex09.html
+++ b/examples/ex09.html
@@ -1,529 +1,562 @@
 <!DOCTYPE html>
 <html lang="en"><head>
  <meta charset="UTF-8">
- <meta name="generator" content="WireViz 0.2 - https://github.com/formatc1702/WireViz">
- <title>WireViz Diagram and BOM</title>
-</head><body style="font-family:Arial">
-<h1>Diagram</h1><!-- XML and DOCTYPE declarations from SVG file removed -->
-<!-- Generated by graphviz version 2.44.1 (20200629.0846)
+ <meta name="generator" content="WireViz 0.3 - https://github.com/formatc1702/WireViz">
+ <title>ex09</title>
+</head><body style="font-family:arial;background-color:#FFFFFF">
+<h1>ex09</h1>
+<h2>Diagram</h2>
+<!-- XML and DOCTYPE declarations from SVG file removed -->
+<!-- Generated by graphviz version 2.49.0 (20210828.1703)
  -->
 <!-- Pages: 1 -->
-<svg width="726pt" height="1158pt"
- viewBox="0.00 0.00 726.00 1158.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<svg width="835pt" height="1158pt"
+ viewBox="0.00 0.00 835.00 1158.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
 <g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 1154)">
-<polygon fill="white" stroke="transparent" points="-4,4 -4,-1154 722,-1154 722,4 -4,4"/>
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 <!-- X1 -->
 <g id="node1" class="node">
 <title>X1</title>
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+<polygon fill="none" stroke="black" points="0,-686 0,-709 48,-709 48,-686 0,-686"/>
 <text text-anchor="start" x="4" y="-693.8" font-family="arial" font-size="14.00">D&#45;Sub</text>
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+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px">X2</td>
+ </tr>
+</table>
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diff --git a/examples/ex09.png b/examples/ex09.png
index 57ccebbc..210a8e2a 100644
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diff --git a/examples/ex10.bom.tsv b/examples/ex10.bom.tsv
index 259d52a8..bdb68a6a 100644
--- a/examples/ex10.bom.tsv
+++ b/examples/ex10.bom.tsv
@@ -1,3 +1,3 @@
-Item	Qty	Unit	Designators
-Connector, Stewart Connector SS-37000-002, male, 8 pins	2		X1, X2
-Cable, CAT5e, 8 x 24 AWG	1	m	W1
+Id	Description	Qty	Unit	Designators
+1	Cable, CAT5e, 8 x 24 AWG	1	m	W1
+2	Connector, Stewart Connector SS-37000-002, male, 8 pins	2		X1, X2
diff --git a/examples/ex10.gv b/examples/ex10.gv
index 05b20db3..9c955e10 100644
--- a/examples/ex10.gv
+++ b/examples/ex10.gv
@@ -1,8 +1,8 @@
 graph {
-// Graph generated by WireViz 0.2
+// Graph generated by WireViz 0.3
 // https://github.com/formatc1702/WireViz
-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
+	node [fillcolor="#FFFFFF" fontname=arial height=0 margin=0 shape=none style=filled width=0]
 	edge [fontname=arial style=bold]
 	X1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
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  </td></tr>
 </table>
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+> fillcolor="#FFFFFF" shape=box style=filled]
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 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -107,7 +107,7 @@ graph {
   </table>
  </td></tr>
 </table>
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+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#ffffff:#00ff00:#ffffff:#000000"]
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    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:1</td>
-    <td>WHGN</td>
-    <td>X2:3</td>
+    <td>X1:1:DA+</td>
+    <td>
+     1:WHGN
+    </td>
+    <td>X2:3:DA+</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="10">
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     </td>
    </tr>
    <tr>
-    <td>X1:2</td>
-    <td>GN</td>
-    <td>X2:6</td>
+    <td>X1:2:DA-</td>
+    <td>
+     2:GN
+    </td>
+    <td>X2:6:DA-</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="10">
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    </tr>
    <tr>
-    <td>X1:3</td>
-    <td>WHOG</td>
-    <td>X2:1</td>
+    <td>X1:3:DB+</td>
+    <td>
+     3:WHOG
+    </td>
+    <td>X2:1:DB+</td>
    </tr>
    <tr>
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     </td>
    </tr>
    <tr>
-    <td>X1:4</td>
-    <td>BU</td>
-    <td>X2:7</td>
+    <td>X1:4:DC+</td>
+    <td>
+     4:BU
+    </td>
+    <td>X2:7:DC+</td>
    </tr>
    <tr>
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    </tr>
    <tr>
-    <td>X1:5</td>
-    <td>WHBU</td>
-    <td>X2:8</td>
+    <td>X1:5:DC-</td>
+    <td>
+     5:WHBU
+    </td>
+    <td>X2:8:DC-</td>
    </tr>
    <tr>
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    </tr>
    <tr>
-    <td>X1:6</td>
-    <td>OG</td>
-    <td>X2:2</td>
+    <td>X1:6:DB-</td>
+    <td>
+     6:OG
+    </td>
+    <td>X2:2:DB-</td>
    </tr>
    <tr>
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-    <td>WHBN</td>
-    <td>X2:4</td>
+    <td>X1:7:DD+</td>
+    <td>
+     7:WHBN
+    </td>
+    <td>X2:4:DD+</td>
    </tr>
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    <tr>
-    <td>X1:8</td>
-    <td>BN</td>
-    <td>X2:5</td>
+    <td>X1:8:DD-</td>
+    <td>
+     8:BN
+    </td>
+    <td>X2:5:DD-</td>
    </tr>
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diff --git a/examples/ex10.html b/examples/ex10.html
index 2ea09f17..00cd6214 100644
--- a/examples/ex10.html
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+ <title>ex10</title>
+</head><body style="font-family:arial;background-color:#FFFFFF">
+<h1>ex10</h1>
+<h2>Diagram</h2>
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diff --git a/requirements.txt b/requirements.txt
index 92620aea..36f048c4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,4 @@
-.
 graphviz
 pillow
 pyyaml
-setuptools
\ No newline at end of file
+setuptools
diff --git a/setup.py b/setup.py
index ac4d19f7..4992bc56 100644
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 import os
diff --git a/src/wireviz/DataClasses.py b/src/wireviz/DataClasses.py
index 3ad84d21..6b7462ab 100644
--- a/src/wireviz/DataClasses.py
+++ b/src/wireviz/DataClasses.py
@@ -1,11 +1,63 @@
-#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from typing import Optional, List, Any, Union
+from typing import Dict, List, Optional, Tuple, Union
 from dataclasses import dataclass, field, InitVar
 from pathlib import Path
+
 from wireviz.wv_helper import int2tuple, aspect_ratio
-from wireviz import wv_colors
+from wireviz.wv_colors import Color, Colors, ColorMode, ColorScheme, COLOR_CODES
+
+
+# Each type alias have their legal values described in comments - validation might be implemented in the future
+PlainText = str # Text not containing HTML tags nor newlines
+Hypertext = str # Text possibly including HTML hyperlinks that are removed in all outputs except HTML output
+MultilineHypertext = str # Hypertext possibly also including newlines to break lines in diagram output
+Designator = PlainText # Case insensitive unique name of connector or cable
+
+# Literal type aliases below are commented to avoid requiring python 3.8
+ConnectorMultiplier = PlainText # = Literal['pincount', 'populated']
+CableMultiplier = PlainText # = Literal['wirecount', 'terminations', 'length', 'total_length']
+ImageScale = PlainText # = Literal['false', 'true', 'width', 'height', 'both']
+
+# Type combinations
+Pin = Union[int, PlainText] # Pin identifier
+PinIndex = int # Zero-based pin index
+Wire = Union[int, PlainText] # Wire number or Literal['s'] for shield
+NoneOrMorePinIndices = Union[PinIndex, Tuple[PinIndex, ...], None]  # None, one, or a tuple of zero-based pin indices
+OneOrMoreWires = Union[Wire, Tuple[Wire, ...]] # One or a tuple of wires
+
+# Metadata can contain whatever is needed by the HTML generation/template.
+MetadataKeys = PlainText  # Literal['title', 'description', 'notes', ...]
+class Metadata(dict):
+    pass
+
+
+@dataclass
+class Options:
+    fontname: PlainText = 'arial'
+    bgcolor: Color = 'WH'
+    bgcolor_node: Optional[Color] = 'WH'
+    bgcolor_connector: Optional[Color] = None
+    bgcolor_cable: Optional[Color] = None
+    bgcolor_bundle: Optional[Color] = None
+    color_mode: ColorMode = 'SHORT'
+    mini_bom_mode: bool = True
+
+    def __post_init__(self):
+        if not self.bgcolor_node:
+            self.bgcolor_node = self.bgcolor
+        if not self.bgcolor_connector:
+            self.bgcolor_connector = self.bgcolor_node
+        if not self.bgcolor_cable:
+            self.bgcolor_cable = self.bgcolor_node
+        if not self.bgcolor_bundle:
+            self.bgcolor_bundle = self.bgcolor_cable
+
+
+@dataclass
+class Tweak:
+    override: Optional[Dict[Designator, Dict[str, Optional[str]]]] = None
+    append: Union[str, List[str], None] = None
 
 
 @dataclass
@@ -13,13 +65,14 @@ class Image:
     gv_dir: InitVar[Path] # Directory of .gv file injected as context during parsing
     # Attributes of the image object <img>:
     src: str
-    scale: Optional[str] = None  # false | true | width | height | both
+    scale: Optional[ImageScale] = None
     # Attributes of the image cell <td> containing the image:
     width: Optional[int] = None
     height: Optional[int] = None
     fixedsize: Optional[bool] = None
+    bgcolor: Optional[Color] = None
     # Contents of the text cell <td> just below the image cell:
-    caption: Optional[str] = None
+    caption: Optional[MultilineHypertext] = None
     # See also HTML doc at https://graphviz.org/doc/info/shapes.html#html
 
     def __post_init__(self, gv_dir):
@@ -44,29 +97,55 @@ def __post_init__(self, gv_dir):
                     self.height = self.width / aspect_ratio(gv_dir.joinpath(self.src))
 
 
+@dataclass
+class AdditionalComponent:
+    type: MultilineHypertext
+    subtype: Optional[MultilineHypertext] = None
+    manufacturer: Optional[MultilineHypertext] = None
+    mpn: Optional[MultilineHypertext] = None
+    supplier: Optional[MultilineHypertext] = None
+    spn: Optional[MultilineHypertext] = None
+    pn: Optional[Hypertext] = None
+    qty: float = 1
+    unit: Optional[str] = None
+    qty_multiplier: Union[ConnectorMultiplier, CableMultiplier, None] = None
+    bgcolor: Optional[Color] = None
+
+    @property
+    def description(self) -> str:
+        return self.type.rstrip() + (f', {self.subtype.rstrip()}' if self.subtype else '')
+
+
 @dataclass
 class Connector:
-    name: str
-    manufacturer: Optional[str] = None
-    mpn: Optional[str] = None
-    pn: Optional[str] = None
+    name: Designator
+    bgcolor: Optional[Color] = None
+    bgcolor_title: Optional[Color] = None
+    manufacturer: Optional[MultilineHypertext] = None
+    mpn: Optional[MultilineHypertext] = None
+    supplier: Optional[MultilineHypertext] = None
+    spn: Optional[MultilineHypertext] = None
+    pn: Optional[Hypertext] = None
     style: Optional[str] = None
     category: Optional[str] = None
-    type: Optional[str] = None
-    subtype: Optional[str] = None
+    type: Optional[MultilineHypertext] = None
+    subtype: Optional[MultilineHypertext] = None
     pincount: Optional[int] = None
     image: Optional[Image] = None
-    notes: Optional[str] = None
-    pinlabels: List[Any] = field(default_factory=list)
-    pins: List[Any] = field(default_factory=list)
-    color: Optional[str] = None
-    show_name: bool = None
-    show_pincount: bool = None
+    notes: Optional[MultilineHypertext] = None
+    pins: List[Pin] = field(default_factory=list)
+    pinlabels: List[Pin] = field(default_factory=list)
+    pincolors: List[Color] = field(default_factory=list)
+    color: Optional[Color] = None
+    show_name: Optional[bool] = None
+    show_pincount: Optional[bool] = None
     hide_disconnected_pins: bool = False
     autogenerate: bool = False
-    loops: List[Any] = field(default_factory=list)
+    loops: List[List[Pin]] = field(default_factory=list)
+    ignore_in_bom: bool = False
+    additional_components: List[AdditionalComponent] = field(default_factory=list)
 
-    def __post_init__(self):
+    def __post_init__(self) -> None:
 
         if isinstance(self.image, dict):
             self.image = Image(**self.image)
@@ -80,23 +159,14 @@ def __post_init__(self):
                 raise Exception('Connectors with style set to simple may only have one pin')
             self.pincount = 1
 
-        if self.pincount is None:
-            if self.pinlabels:
-                self.pincount = len(self.pinlabels)
-            elif self.pins:
-                self.pincount = len(self.pins)
-            else:
-                raise Exception('You need to specify at least one, pincount, pins or pinlabels')
-
-        if self.pinlabels and self.pins:
-            if len(self.pinlabels) != len(self.pins):
-                raise Exception('Given pins and pinlabels size mismatch')
+        if not self.pincount:
+            self.pincount = max(len(self.pins), len(self.pinlabels), len(self.pincolors))
+            if not self.pincount:
+                raise Exception('You need to specify at least one, pincount, pins, pinlabels, or pincolors')
 
-        # create default lists for pins (sequential) and pinlabels (blank) if not specified
+        # create default list for pins (sequential) if not specified
         if not self.pins:
             self.pins = list(range(1, self.pincount + 1))
-        if not self.pinlabels:
-            self.pinlabels = [''] * self.pincount
 
         if len(self.pins) != len(set(self.pins)):
             raise Exception('Pins are not unique')
@@ -114,33 +184,56 @@ def __post_init__(self):
             if len(loop) != 2:
                 raise Exception('Loops must be between exactly two pins!')
 
-    def activate_pin(self, pin):
+        for i, item in enumerate(self.additional_components):
+            if isinstance(item, dict):
+                self.additional_components[i] = AdditionalComponent(**item)
+
+    def activate_pin(self, pin: Pin) -> None:
         self.visible_pins[pin] = True
 
+    def get_qty_multiplier(self, qty_multiplier: Optional[ConnectorMultiplier]) -> int:
+        if not qty_multiplier:
+            return 1
+        elif qty_multiplier == 'pincount':
+            return self.pincount
+        elif qty_multiplier == 'populated':
+            return sum(self.visible_pins.values())
+        else:
+            raise ValueError(f'invalid qty multiplier parameter for connector {qty_multiplier}')
+
 
 @dataclass
 class Cable:
-    name: str
-    manufacturer: Optional[Union[str, List[str]]] = None
-    mpn: Optional[Union[str, List[str]]] = None
-    pn: Optional[Union[str, List[str]]] = None
+    name: Designator
+    bgcolor: Optional[Color] = None
+    bgcolor_title: Optional[Color] = None
+    manufacturer: Union[MultilineHypertext, List[MultilineHypertext], None] = None
+    mpn: Union[MultilineHypertext, List[MultilineHypertext], None] = None
+    supplier: Union[MultilineHypertext, List[MultilineHypertext], None] = None
+    spn: Union[MultilineHypertext, List[MultilineHypertext], None] = None
+    pn: Union[Hypertext, List[Hypertext], None] = None
     category: Optional[str] = None
-    type: Optional[str] = None
+    type: Optional[MultilineHypertext] = None
     gauge: Optional[float] = None
     gauge_unit: Optional[str] = None
     show_equiv: bool = False
     length: float = 0
-    color: Optional[str] = None
+    length_unit: Optional[str] = None
+    color: Optional[Color] = None
     wirecount: Optional[int] = None
-    shield: bool = False
+    shield: Union[bool, Color] = False
     image: Optional[Image] = None
-    notes: Optional[str] = None
-    colors: List[Any] = field(default_factory=list)
-    color_code: Optional[str] = None
+    notes: Optional[MultilineHypertext] = None
+    colors: List[Colors] = field(default_factory=list)
+    wirelabels: List[Wire] = field(default_factory=list)
+    color_code: Optional[ColorScheme] = None
     show_name: bool = True
     show_wirecount: bool = True
+    show_wirenumbers: Optional[bool] = None
+    ignore_in_bom: bool = False
+    additional_components: List[AdditionalComponent] = field(default_factory=list)
 
-    def __post_init__(self):
+    def __post_init__(self) -> None:
 
         if isinstance(self.image, dict):
             self.image = Image(**self.image)
@@ -149,9 +242,11 @@ def __post_init__(self):
             try:
                 g, u = self.gauge.split(' ')
             except Exception:
-                raise Exception('Gauge must be a number, or number and unit separated by a space')
+                raise Exception(f'Cable {self.name} gauge={self.gauge} - Gauge must be a number, or number and unit separated by a space')
             self.gauge = g
 
+            if self.gauge_unit is not None:
+                print(f'Warning: Cable {self.name} gauge_unit={self.gauge_unit} is ignored because its gauge contains {u}')
             if u.upper() == 'AWG':
                 self.gauge_unit = u.upper()
             else:
@@ -163,15 +258,30 @@ def __post_init__(self):
         else:
             pass  # gauge not specified
 
+        if isinstance(self.length, str):  # length and unit specified
+            try:
+                L, u = self.length.split(' ')
+                L = float(L)
+            except Exception:
+                raise Exception(f'Cable {self.name} length={self.length} - Length must be a number, or number and unit separated by a space')
+            self.length = L
+            if self.length_unit is not None:
+                print(f'Warning: Cable {self.name} length_unit={self.length_unit} is ignored because its length contains {u}')
+            self.length_unit = u
+        elif not any(isinstance(self.length, t) for t in [int, float]):
+            raise Exception(f'Cable {self.name} length has a non-numeric value')
+        elif self.length_unit is None:
+            self.length_unit = 'm'
+
         self.connections = []
 
         if self.wirecount:  # number of wires explicitly defined
             if self.colors:  # use custom color palette (partly or looped if needed)
                 pass
             elif self.color_code:  # use standard color palette (partly or looped if needed)
-                if self.color_code not in wv_colors.COLOR_CODES:
+                if self.color_code not in COLOR_CODES:
                     raise Exception('Unknown color code')
-                self.colors = wv_colors.COLOR_CODES[self.color_code]
+                self.colors = COLOR_CODES[self.color_code]
             else:  # no colors defined, add dummy colors
                 self.colors = [''] * self.wirecount
 
@@ -186,8 +296,12 @@ def __post_init__(self):
                 raise Exception('Unknown number of wires. Must specify wirecount or colors (implicit length)')
             self.wirecount = len(self.colors)
 
+        if self.wirelabels:
+            if self.shield and 's' in self.wirelabels:
+                raise Exception('"s" may not be used as a wire label for a shielded cable.')
+
         # if lists of part numbers are provided check this is a bundle and that it matches the wirecount.
-        for idfield in [self.manufacturer, self.mpn, self.pn]:
+        for idfield in [self.manufacturer, self.mpn, self.supplier, self.spn, self.pn]:
             if isinstance(idfield, list):
                 if self.category == "bundle":
                     # check the length
@@ -196,22 +310,44 @@ def __post_init__(self):
                 else:
                     raise Exception('lists of part data are only supported for bundles')
 
+        # by default, show wire numbers for cables, hide for bundles
+        if self.show_wirenumbers is None:
+            self.show_wirenumbers = self.category != 'bundle'
+
+        for i, item in enumerate(self.additional_components):
+            if isinstance(item, dict):
+                self.additional_components[i] = AdditionalComponent(**item)
 
-    def connect(self, from_name, from_pin, via_pin, to_name, to_pin):
+    # The *_pin arguments accept a tuple, but it seems not in use with the current code.
+    def connect(self, from_name: Optional[Designator], from_pin: NoneOrMorePinIndices, via_wire: OneOrMoreWires,
+                to_name: Optional[Designator], to_pin: NoneOrMorePinIndices) -> None:
         from_pin = int2tuple(from_pin)
-        via_pin = int2tuple(via_pin)
+        via_wire = int2tuple(via_wire)
         to_pin = int2tuple(to_pin)
         if len(from_pin) != len(to_pin):
             raise Exception('from_pin must have the same number of elements as to_pin')
         for i, _ in enumerate(from_pin):
-            # self.connections.append((from_name, from_pin[i], via_pin[i], to_name, to_pin[i]))
-            self.connections.append(Connection(from_name, from_pin[i], via_pin[i], to_name, to_pin[i]))
+            self.connections.append(Connection(from_name, from_pin[i], via_wire[i], to_name, to_pin[i]))
+
+    def get_qty_multiplier(self, qty_multiplier: Optional[CableMultiplier]) -> float:
+        if not qty_multiplier:
+            return 1
+        elif qty_multiplier == 'wirecount':
+            return self.wirecount
+        elif qty_multiplier == 'terminations':
+            return len(self.connections)
+        elif qty_multiplier == 'length':
+            return self.length
+        elif qty_multiplier == 'total_length':
+            return self.length * self.wirecount
+        else:
+            raise ValueError(f'invalid qty multiplier parameter for cable {qty_multiplier}')
 
 
 @dataclass
 class Connection:
-    from_name: Any
-    from_port: Any
-    via_port: Any
-    to_name: Any
-    to_port: Any
+    from_name: Optional[Designator]
+    from_port: Optional[PinIndex]
+    via_port: Wire
+    to_name: Optional[Designator]
+    to_port: Optional[PinIndex]
diff --git a/src/wireviz/Harness.py b/src/wireviz/Harness.py
index 8b401c21..2f9eb641 100644
--- a/src/wireviz/Harness.py
+++ b/src/wireviz/Harness.py
@@ -1,26 +1,37 @@
-#!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
-from wireviz.DataClasses import Connector, Cable
 from graphviz import Graph
-from wireviz import wv_colors, wv_helper, __version__, APP_NAME, APP_URL
-from wireviz.wv_colors import get_color_hex
-from wireviz.wv_helper import awg_equiv, mm2_equiv, tuplelist2tsv, \
-    nested_html_table, flatten2d, index_if_list, html_line_breaks, \
-    graphviz_line_breaks, remove_line_breaks, open_file_read, open_file_write, \
-    html_colorbar, html_image, html_caption, manufacturer_info_field
 from collections import Counter
-from typing import List
+from typing import Any, List, Union
+from dataclasses import dataclass
 from pathlib import Path
+from itertools import zip_longest
 import re
 
-
+from wireviz import wv_colors, __version__, APP_NAME, APP_URL
+from wireviz.DataClasses import Metadata, Options, Tweak, Connector, Cable
+from wireviz.wv_colors import get_color_hex, translate_color
+from wireviz.wv_gv_html import nested_html_table, \
+    html_bgcolor_attr, html_bgcolor, html_colorbar, \
+    html_image, html_caption, remove_links, html_line_breaks
+from wireviz.wv_bom import pn_info_string, component_table_entry, \
+    get_additional_component_table, bom_list, generate_bom, \
+    HEADER_PN, HEADER_MPN, HEADER_SPN
+from wireviz.wv_html import generate_html_output
+from wireviz.wv_helper import awg_equiv, mm2_equiv, tuplelist2tsv, flatten2d, \
+    open_file_read, open_file_write
+
+
+@dataclass
 class Harness:
+    metadata: Metadata
+    options: Options
+    tweak: Tweak
 
-    def __init__(self):
-        self.color_mode = 'SHORT'
+    def __post_init__(self):
         self.connectors = {}
         self.cables = {}
+        self._bom = []  # Internal Cache for generated bom
         self.additional_bom_items = []
 
     def add_connector(self, name: str, *args, **kwargs) -> None:
@@ -32,30 +43,49 @@ def add_cable(self, name: str, *args, **kwargs) -> None:
     def add_bom_item(self, item: dict) -> None:
         self.additional_bom_items.append(item)
 
-    def connect(self, from_name: str, from_pin: (int, str), via_name: str, via_pin: (int, str), to_name: str, to_pin: (int, str)) -> None:
-        for (name, pin) in zip([from_name, to_name], [from_pin, to_pin]):  # check from and to connectors
+    def connect(self, from_name: str, from_pin: (int, str), via_name: str, via_wire: (int, str), to_name: str, to_pin: (int, str)) -> None:
+        # check from and to connectors
+        for (name, pin) in zip([from_name, to_name], [from_pin, to_pin]):
             if name is not None and name in self.connectors:
                 connector = self.connectors[name]
+                # check if provided name is ambiguous
                 if pin in connector.pins and pin in connector.pinlabels:
-                    if connector.pins.index(pin) == connector.pinlabels.index(pin):
-                        # TODO: Maybe issue a warning? It's not worthy of an exception if it's unambiguous, but maybe risky?
-                        pass
-                    else:
+                    if connector.pins.index(pin) != connector.pinlabels.index(pin):
                         raise Exception(f'{name}:{pin} is defined both in pinlabels and pins, for different pins.')
+                    # TODO: Maybe issue a warning if present in both lists but referencing the same pin?
                 if pin in connector.pinlabels:
                     if connector.pinlabels.count(pin) > 1:
                         raise Exception(f'{name}:{pin} is defined more than once.')
-                    else:
-                        index = connector.pinlabels.index(pin)
-                        pin = connector.pins[index] # map pin name to pin number
-                        if name == from_name:
-                            from_pin = pin
-                        if name == to_name:
-                            to_pin = pin
+                    index = connector.pinlabels.index(pin)
+                    pin = connector.pins[index] # map pin name to pin number
+                    if name == from_name:
+                        from_pin = pin
+                    if name == to_name:
+                        to_pin = pin
                 if not pin in connector.pins:
                     raise Exception(f'{name}:{pin} not found.')
 
-        self.cables[via_name].connect(from_name, from_pin, via_pin, to_name, to_pin)
+        # check via cable
+        if via_name in self.cables:
+            cable = self.cables[via_name]
+            # check if provided name is ambiguous
+            if via_wire in cable.colors and via_wire in cable.wirelabels:
+                if cable.colors.index(via_wire) != cable.wirelabels.index(via_wire):
+                    raise Exception(f'{via_name}:{via_wire} is defined both in colors and wirelabels, for different wires.')
+                # TODO: Maybe issue a warning if present in both lists but referencing the same wire?
+            if via_wire in cable.colors:
+                if cable.colors.count(via_wire) > 1:
+                    raise Exception(f'{via_name}:{via_wire} is used for more than one wire.')
+                via_wire = cable.colors.index(via_wire) + 1  # list index starts at 0, wire IDs start at 1
+            elif via_wire in cable.wirelabels:
+                if cable.wirelabels.count(via_wire) > 1:
+                    raise Exception(f'{via_name}:{via_wire} is used for more than one wire.')
+                via_wire = cable.wirelabels.index(via_wire) + 1  # list index starts at 0, wire IDs start at 1
+
+        from_pin_id = self.connectors[from_name].pins.index(from_pin) if from_pin is not None else None
+        to_pin_id = self.connectors[to_name].pins.index(to_pin) if to_pin is not None else None
+
+        self.cables[via_name].connect(from_name, from_pin_id, via_wire, to_name, to_pin_id)
         if from_name in self.connectors:
             self.connectors[from_name].activate_pin(from_pin)
         if to_name in self.connectors:
@@ -65,18 +95,19 @@ def create_graph(self) -> Graph:
         dot = Graph()
         dot.body.append(f'// Graph generated by {APP_NAME} {__version__}')
         dot.body.append(f'// {APP_URL}')
-        font = 'arial'
         dot.attr('graph', rankdir='LR',
                  ranksep='2',
-                 bgcolor='white',
+                 bgcolor=wv_colors.translate_color(self.options.bgcolor, "HEX"),
                  nodesep='0.33',
-                 fontname=font)
-        dot.attr('node', shape='record',
+                 fontname=self.options.fontname)
+        dot.attr('node',
+                 shape='none',
+                 width='0', height='0', margin='0',  # Actual size of the node is entirely determined by the label.
                  style='filled',
-                 fillcolor='white',
-                 fontname=font)
+                 fillcolor=wv_colors.translate_color(self.options.bgcolor_node, "HEX"),
+                 fontname=self.options.fontname)
         dot.attr('edge', style='bold',
-                 fontname=font)
+                 fontname=self.options.fontname)
 
         # prepare ports on connectors depending on which side they will connect
         for _, cable in self.cables.items():
@@ -88,35 +119,54 @@ def create_graph(self) -> Graph:
 
         for connector in self.connectors.values():
 
+            # If no wires connected (except maybe loop wires)?
+            if not (connector.ports_left or connector.ports_right):
+                connector.ports_left = True  # Use left side pins.
+
             html = []
 
-            rows = [[connector.name if connector.show_name else None],
-                    [f'P/N: {connector.pn}' if connector.pn else None,
-                     html_line_breaks(manufacturer_info_field(connector.manufacturer, connector.mpn))],
+            rows = [[f'{html_bgcolor(connector.bgcolor_title)}{remove_links(connector.name)}'
+                        if connector.show_name else None],
+                    [pn_info_string(HEADER_PN, None, remove_links(connector.pn)),
+                     html_line_breaks(pn_info_string(HEADER_MPN, connector.manufacturer, connector.mpn)),
+                     html_line_breaks(pn_info_string(HEADER_SPN, connector.supplier, connector.spn))],
                     [html_line_breaks(connector.type),
                      html_line_breaks(connector.subtype),
                      f'{connector.pincount}-pin' if connector.show_pincount else None,
-                     connector.color, html_colorbar(connector.color)],
+                     translate_color(connector.color, self.options.color_mode) if connector.color else None,
+                     html_colorbar(connector.color)],
                     '<!-- connector table -->' if connector.style != 'simple' else None,
                     [html_image(connector.image)],
-                    [html_caption(connector.image)],
-                    [html_line_breaks(connector.notes)]]
-            html.extend(nested_html_table(rows))
+                    [html_caption(connector.image)]]
+            rows.extend(get_additional_component_table(self, connector))
+            rows.append([html_line_breaks(connector.notes)])
+            html.extend(nested_html_table(rows, html_bgcolor_attr(connector.bgcolor)))
 
             if connector.style != 'simple':
                 pinhtml = []
                 pinhtml.append('<table border="0" cellspacing="0" cellpadding="3" cellborder="1">')
 
-                for pin, pinlabel in zip(connector.pins, connector.pinlabels):
-                    if connector.hide_disconnected_pins and not connector.visible_pins.get(pin, False):
+                for pinindex, (pinname, pinlabel, pincolor) in enumerate(zip_longest(connector.pins, connector.pinlabels, connector.pincolors)):
+                    if connector.hide_disconnected_pins and not connector.visible_pins.get(pinname, False):
                         continue
                     pinhtml.append('   <tr>')
                     if connector.ports_left:
-                        pinhtml.append(f'    <td port="p{pin}l">{pin}</td>')
+                        pinhtml.append(f'    <td port="p{pinindex+1}l">{pinname}</td>')
                     if pinlabel:
                         pinhtml.append(f'    <td>{pinlabel}</td>')
+                    if connector.pincolors:
+                        if pincolor in wv_colors._color_hex.keys():
+                            pinhtml.append(f'    <td sides="tbl">{translate_color(pincolor, self.options.color_mode)}</td>')
+                            pinhtml.append( '    <td sides="tbr">')
+                            pinhtml.append( '     <table border="0" cellborder="1"><tr>')
+                            pinhtml.append(f'      <td bgcolor="{wv_colors.translate_color(pincolor, "HEX")}" width="8" height="8" fixedsize="true"></td>')
+                            pinhtml.append( '     </tr></table>')
+                            pinhtml.append( '    </td>')
+                        else:
+                            pinhtml.append( '    <td colspan="2"></td>')
+
                     if connector.ports_right:
-                        pinhtml.append(f'    <td port="p{pin}r">{pin}</td>')
+                        pinhtml.append(f'    <td port="p{pinindex+1}r">{pinname}</td>')
                     pinhtml.append('   </tr>')
 
                 pinhtml.append('  </table>')
@@ -124,7 +174,8 @@ def create_graph(self) -> Graph:
                 html = [row.replace('<!-- connector table -->', '\n'.join(pinhtml)) for row in html]
 
             html = '\n'.join(html)
-            dot.node(connector.name, label=f'<\n{html}\n>', shape='none', margin='0', style='filled', fillcolor='white')
+            dot.node(connector.name, label=f'<\n{html}\n>', shape='box', style='filled',
+                     fillcolor=translate_color(self.options.bgcolor_connector, "HEX"))
 
             if len(connector.loops) > 0:
                 dot.attr('edge', color='#000000:#ffffff:#000000')
@@ -159,31 +210,51 @@ def create_graph(self) -> Graph:
                 elif cable.gauge_unit.upper() == 'AWG':
                     awg_fmt = f' ({mm2_equiv(cable.gauge)} mm\u00B2)'
 
-            rows = [[cable.name if cable.show_name else None],
-                    [f'P/N: {cable.pn}' if (cable.pn and not isinstance(cable.pn, list)) else None,
-                     html_line_breaks(manufacturer_info_field(
+            rows = [[f'{html_bgcolor(cable.bgcolor_title)}{remove_links(cable.name)}'
+                        if cable.show_name else None],
+                    [pn_info_string(HEADER_PN, None,
+                        remove_links(cable.pn)) if not isinstance(cable.pn, list) else None,
+                     html_line_breaks(pn_info_string(HEADER_MPN,
                         cable.manufacturer if not isinstance(cable.manufacturer, list) else None,
-                        cable.mpn if not isinstance(cable.mpn, list) else None))],
+                        cable.mpn if not isinstance(cable.mpn, list) else None)),
+                     html_line_breaks(pn_info_string(HEADER_SPN,
+                        cable.supplier if not isinstance(cable.supplier, list) else None,
+                        cable.spn if not isinstance(cable.spn, list) else None))],
                     [html_line_breaks(cable.type),
                      f'{cable.wirecount}x' if cable.show_wirecount else None,
                      f'{cable.gauge} {cable.gauge_unit}{awg_fmt}' if cable.gauge else None,
                      '+ S' if cable.shield else None,
-                     f'{cable.length} m' if cable.length > 0 else None,
-                     cable.color, html_colorbar(cable.color)],
+                     f'{cable.length} {cable.length_unit}' if cable.length > 0 else None,
+                     translate_color(cable.color, self.options.color_mode) if cable.color else None,
+                     html_colorbar(cable.color)],
                     '<!-- wire table -->',
                     [html_image(cable.image)],
-                    [html_caption(cable.image)],
-                    [html_line_breaks(cable.notes)]]
-            html.extend(nested_html_table(rows))
+                    [html_caption(cable.image)]]
+
+            rows.extend(get_additional_component_table(self, cable))
+            rows.append([html_line_breaks(cable.notes)])
+            html.extend(nested_html_table(rows, html_bgcolor_attr(cable.bgcolor)))
 
             wirehtml = []
             wirehtml.append('<table border="0" cellspacing="0" cellborder="0">')  # conductor table
             wirehtml.append('   <tr><td>&nbsp;</td></tr>')
 
-            for i, connection_color in enumerate(cable.colors, 1):
+            for i, (connection_color, wirelabel) in enumerate(zip_longest(cable.colors, cable.wirelabels), 1):
                 wirehtml.append('   <tr>')
                 wirehtml.append(f'    <td><!-- {i}_in --></td>')
-                wirehtml.append(f'    <td>{wv_colors.translate_color(connection_color, self.color_mode)}</td>')
+                wirehtml.append(f'    <td>')
+
+                wireinfo = []
+                if cable.show_wirenumbers:
+                    wireinfo.append(str(i))
+                colorstr = wv_colors.translate_color(connection_color, self.options.color_mode)
+                if colorstr:
+                    wireinfo.append(colorstr)
+                if cable.wirelabels:
+                    wireinfo.append(wirelabel if wirelabel is not None else '')
+                wirehtml.append(f'     {":".join(wireinfo)}')
+
+                wirehtml.append(f'    </td>')
                 wirehtml.append(f'    <td><!-- {i}_out --></td>')
                 wirehtml.append('   </tr>')
 
@@ -196,18 +267,23 @@ def create_graph(self) -> Graph:
                 wirehtml.append('     </table>')
                 wirehtml.append('    </td>')
                 wirehtml.append('   </tr>')
-                if(cable.category == 'bundle'):  # for bundles individual wires can have part information
+                if cable.category == 'bundle':  # for bundles individual wires can have part information
                     # create a list of wire parameters
                     wireidentification = []
                     if isinstance(cable.pn, list):
-                        wireidentification.append(f'P/N: {cable.pn[i - 1]}')
-                    manufacturer_info = manufacturer_info_field(
+                        wireidentification.append(pn_info_string(HEADER_PN, None, remove_links(cable.pn[i - 1])))
+                    manufacturer_info = pn_info_string(HEADER_MPN,
                         cable.manufacturer[i - 1] if isinstance(cable.manufacturer, list) else None,
                         cable.mpn[i - 1] if isinstance(cable.mpn, list) else None)
+                    supplier_info = pn_info_string(HEADER_SPN,
+                        cable.supplier[i - 1] if isinstance(cable.supplier, list) else None,
+                        cable.spn[i - 1] if isinstance(cable.spn, list) else None)
                     if manufacturer_info:
                         wireidentification.append(html_line_breaks(manufacturer_info))
+                    if supplier_info:
+                        wireidentification.append(html_line_breaks(supplier_info))
                     # print parameters into a table row under the wire
-                    if(len(wireidentification) > 0):
+                    if len(wireidentification) > 0 :
                         wirehtml.append('   <tr><td colspan="3">')
                         wirehtml.append('    <table border="0" cellspacing="0" cellborder="0"><tr>')
                         for attrib in wireidentification:
@@ -237,30 +313,101 @@ def create_graph(self) -> Graph:
             html = [row.replace('<!-- wire table -->', '\n'.join(wirehtml)) for row in html]
 
             # connections
-            for connection_color in cable.connections:
-                if isinstance(connection_color.via_port, int):  # check if it's an actual wire and not a shield
-                    dot.attr('edge', color=':'.join(['#000000'] + wv_colors.get_color_hex(cable.colors[connection_color.via_port - 1], pad=pad) + ['#000000']))
+            for connection in cable.connections:
+                if isinstance(connection.via_port, int):  # check if it's an actual wire and not a shield
+                    dot.attr('edge', color=':'.join(['#000000'] + wv_colors.get_color_hex(cable.colors[connection.via_port - 1], pad=pad) + ['#000000']))
                 else:  # it's a shield connection
                     # shield is shown with specified color and black borders, or as a thin black wire otherwise
                     dot.attr('edge', color=':'.join(['#000000', shield_color_hex, '#000000']) if isinstance(cable.shield, str) else '#000000')
-                if connection_color.from_port is not None:  # connect to left
-                    from_port = f':p{connection_color.from_port}r' if self.connectors[connection_color.from_name].style != 'simple' else ''
-                    code_left_1 = f'{connection_color.from_name}{from_port}:e'
-                    code_left_2 = f'{cable.name}:w{connection_color.via_port}:w'
+                if connection.from_port is not None:  # connect to left
+                    from_connector = self.connectors[connection.from_name]
+                    from_port = f':p{connection.from_port+1}r' if from_connector.style != 'simple' else ''
+                    code_left_1 = f'{connection.from_name}{from_port}:e'
+                    code_left_2 = f'{cable.name}:w{connection.via_port}:w'
                     dot.edge(code_left_1, code_left_2)
-                    from_string = f'{connection_color.from_name}:{connection_color.from_port}' if self.connectors[connection_color.from_name].show_name else ''
-                    html = [row.replace(f'<!-- {connection_color.via_port}_in -->', from_string) for row in html]
-                if connection_color.to_port is not None:  # connect to right
-                    code_right_1 = f'{cable.name}:w{connection_color.via_port}:e'
-                    to_port = f':p{connection_color.to_port}l' if self.connectors[connection_color.to_name].style != 'simple' else ''
-                    code_right_2 = f'{connection_color.to_name}{to_port}:w'
+                    if from_connector.show_name:
+                        from_info = [str(connection.from_name), str(self.connectors[connection.from_name].pins[connection.from_port])]
+                        if from_connector.pinlabels:
+                            pinlabel = from_connector.pinlabels[connection.from_port]
+                            if pinlabel != '':
+                                from_info.append(pinlabel)
+                        from_string = ':'.join(from_info)
+                    else:
+                        from_string = ''
+                    html = [row.replace(f'<!-- {connection.via_port}_in -->', from_string) for row in html]
+                if connection.to_port is not None:  # connect to right
+                    to_connector = self.connectors[connection.to_name]
+                    code_right_1 = f'{cable.name}:w{connection.via_port}:e'
+                    to_port = f':p{connection.to_port+1}l' if self.connectors[connection.to_name].style != 'simple' else ''
+                    code_right_2 = f'{connection.to_name}{to_port}:w'
                     dot.edge(code_right_1, code_right_2)
-                    to_string = f'{connection_color.to_name}:{connection_color.to_port}' if self.connectors[connection_color.to_name].show_name else ''
-                    html = [row.replace(f'<!-- {connection_color.via_port}_out -->', to_string) for row in html]
+                    if to_connector.show_name:
+                        to_info = [str(connection.to_name), str(self.connectors[connection.to_name].pins[connection.to_port])]
+                        if to_connector.pinlabels:
+                            pinlabel = to_connector.pinlabels[connection.to_port]
+                            if pinlabel != '':
+                                to_info.append(pinlabel)
+                        to_string = ':'.join(to_info)
+                    else:
+                        to_string = ''
+                    html = [row.replace(f'<!-- {connection.via_port}_out -->', to_string) for row in html]
 
+            style, bgcolor = ('filled,dashed', self.options.bgcolor_bundle) if cable.category == 'bundle' else \
+                             ('filled',        self.options.bgcolor_cable)
             html = '\n'.join(html)
             dot.node(cable.name, label=f'<\n{html}\n>', shape='box',
-                     style='filled,dashed' if cable.category == 'bundle' else '', margin='0', fillcolor='white')
+                     style=style, fillcolor=translate_color(bgcolor, "HEX"))
+
+        def typecheck(name: str, value: Any, expect: type) -> None:
+            if not isinstance(value, expect):
+                raise Exception(f'Unexpected value type of {name}: Expected {expect}, got {type(value)}\n{value}')
+
+        # TODO?: Differ between override attributes and HTML?
+        if self.tweak.override is not None:
+            typecheck('tweak.override', self.tweak.override, dict)
+            for k, d in self.tweak.override.items():
+                typecheck(f'tweak.override.{k} key', k, str)
+                typecheck(f'tweak.override.{k} value', d, dict)
+                for a, v in d.items():
+                    typecheck(f'tweak.override.{k}.{a} key', a, str)
+                    typecheck(f'tweak.override.{k}.{a} value', v, (str, type(None)))
+
+            # Override generated attributes of selected entries matching tweak.override.
+            for i, entry in enumerate(dot.body):
+                if isinstance(entry, str):
+                    # Find a possibly quoted keyword after leading TAB(s) and followed by [ ].
+                    match = re.match(r'^\t*(")?((?(1)[^"]|[^ "])+)(?(1)") \[.*\]$', entry, re.S)
+                    keyword = match and match[2]
+                    if keyword in self.tweak.override.keys():
+                        for attr, value in self.tweak.override[keyword].items():
+                            if value is None:
+                                entry, n_subs = re.subn(f'( +)?{attr}=("[^"]*"|[^] ]*)(?(1)| *)', '', entry)
+                                if n_subs < 1:
+                                    print(f'Harness.create_graph() warning: {attr} not found in {keyword}!')
+                                elif n_subs > 1:
+                                    print(f'Harness.create_graph() warning: {attr} removed {n_subs} times in {keyword}!')
+                                continue
+
+                            if len(value) == 0 or ' ' in value:
+                                value = value.replace('"', r'\"')
+                                value = f'"{value}"'
+                            entry, n_subs = re.subn(f'{attr}=("[^"]*"|[^] ]*)', f'{attr}={value}', entry)
+                            if n_subs < 1:
+                                # If attr not found, then append it
+                                entry = re.sub(r'\]$', f' {attr}={value}]', entry)
+                            elif n_subs > 1:
+                                print(f'Harness.create_graph() warning: {attr} overridden {n_subs} times in {keyword}!')
+
+                        dot.body[i] = entry
+
+        if self.tweak.append is not None:
+            if isinstance(self.tweak.append, list):
+                for i, element in enumerate(self.tweak.append, 1):
+                    typecheck(f'tweak.append[{i}]', element, str)
+                dot.body.extend(self.tweak.append)
+            else:
+                typecheck('tweak.append', self.tweak.append, str)
+                dot.body.append(self.tweak.append)
 
         return dot
 
@@ -290,141 +437,13 @@ def output(self, filename: (str, Path), view: bool = False, cleanup: bool = True
             graph.render(filename=filename, view=view, cleanup=cleanup)
         graph.save(filename=f'{filename}.gv')
         # bom output
-        bom_list = self.bom_list()
+        bomlist = bom_list(self.bom())
         with open_file_write(f'{filename}.bom.tsv') as file:
-            file.write(tuplelist2tsv(bom_list))
+            file.write(tuplelist2tsv(bomlist))
         # HTML output
-        with open_file_write(f'{filename}.html') as file:
-            file.write('<!DOCTYPE html>\n')
-            file.write('<html lang="en"><head>\n')
-            file.write(' <meta charset="UTF-8">\n')
-            file.write(f' <meta name="generator" content="{APP_NAME} {__version__} - {APP_URL}">\n')
-            file.write(f' <title>{APP_NAME} Diagram and BOM</title>\n')
-            file.write('</head><body style="font-family:Arial">\n')
-
-            file.write('<h1>Diagram</h1>')
-            with open_file_read(f'{filename}.svg') as svg:
-                file.write(re.sub(
-                    '^<[?]xml [^?>]*[?]>[^<]*<!DOCTYPE [^>]*>',
-                    '<!-- XML and DOCTYPE declarations from SVG file removed -->',
-                    svg.read(1024), 1))
-                for svgdata in svg:
-                    file.write(svgdata)
-
-            file.write('<h1>Bill of Materials</h1>')
-            listy = flatten2d(bom_list)
-            file.write('<table style="border:1px solid #000000; font-size: 14pt; border-spacing: 0px">')
-            file.write('<tr>')
-            for item in listy[0]:
-                file.write(f'<th style="text-align:left; border:1px solid #000000; padding: 8px">{item}</th>')
-            file.write('</tr>')
-            for row in listy[1:]:
-                file.write('<tr>')
-                for i, item in enumerate(row):
-                    item_str = item.replace('\u00b2', '&sup2;')
-                    align = 'text-align:right; ' if listy[0][i] == 'Qty' else ''
-                    file.write(f'<td style="{align}border:1px solid #000000; padding: 4px">{item_str}</td>')
-                file.write('</tr>')
-            file.write('</table>')
-
-            file.write('</body></html>')
+        generate_html_output(filename, bomlist, self.metadata, self.options)
 
     def bom(self):
-        bom = []
-        bom_connectors = []
-        bom_cables = []
-        bom_extra = []
-        # connectors
-        connector_group = lambda c: (c.type, c.subtype, c.pincount, c.manufacturer, c.mpn, c.pn)
-        for group in Counter([connector_group(v) for v in self.connectors.values()]):
-            items = {k: v for k, v in self.connectors.items() if connector_group(v) == group}
-            shared = next(iter(items.values()))
-            designators = list(items.keys())
-            designators.sort()
-            conn_type = f', {remove_line_breaks(shared.type)}' if shared.type else ''
-            conn_subtype = f', {remove_line_breaks(shared.subtype)}' if shared.subtype else ''
-            conn_pincount = f', {shared.pincount} pins' if shared.style != 'simple' else ''
-            conn_color = f', {shared.color}' if shared.color else ''
-            name = f'Connector{conn_type}{conn_subtype}{conn_pincount}{conn_color}'
-            item = {'item': name, 'qty': len(designators), 'unit': '', 'designators': designators if shared.show_name else '',
-                    'manufacturer': remove_line_breaks(shared.manufacturer), 'mpn': remove_line_breaks(shared.mpn), 'pn': shared.pn}
-            bom_connectors.append(item)
-            bom_connectors = sorted(bom_connectors, key=lambda k: k['item'])  # https://stackoverflow.com/a/73050
-        bom.extend(bom_connectors)
-        # cables
-        # TODO: If category can have other non-empty values than 'bundle', maybe it should be part of item name?
-        # The category needs to be included in cable_group to keep the bundles excluded.
-        cable_group = lambda c: (c.category, c.type, c.gauge, c.gauge_unit, c.wirecount, c.shield, c.manufacturer, c.mpn, c.pn)
-        for group in Counter([cable_group(v) for v in self.cables.values() if v.category != 'bundle']):
-            items = {k: v for k, v in self.cables.items() if cable_group(v) == group}
-            shared = next(iter(items.values()))
-            designators = list(items.keys())
-            designators.sort()
-            total_length = sum(i.length for i in items.values())
-            cable_type = f', {remove_line_breaks(shared.type)}' if shared.type else ''
-            gauge_name = f' x {shared.gauge} {shared.gauge_unit}' if shared.gauge else ' wires'
-            shield_name = ' shielded' if shared.shield else ''
-            name = f'Cable{cable_type}, {shared.wirecount}{gauge_name}{shield_name}'
-            item = {'item': name, 'qty': round(total_length, 3), 'unit': 'm', 'designators': designators,
-                    'manufacturer': remove_line_breaks(shared.manufacturer), 'mpn': remove_line_breaks(shared.mpn), 'pn': shared.pn}
-            bom_cables.append(item)
-        # bundles (ignores wirecount)
-        wirelist = []
-        # list all cables again, since bundles are represented as wires internally, with the category='bundle' set
-        for bundle in self.cables.values():
-            if bundle.category == 'bundle':
-                # add each wire from each bundle to the wirelist
-                for index, color in enumerate(bundle.colors, 0):
-                    wirelist.append({'type': bundle.type, 'gauge': bundle.gauge, 'gauge_unit': bundle.gauge_unit, 'length': bundle.length, 'color': color, 'designator': bundle.name,
-                                     'manufacturer': remove_line_breaks(index_if_list(bundle.manufacturer, index)),
-                                     'mpn': remove_line_breaks(index_if_list(bundle.mpn, index)),
-                                     'pn': index_if_list(bundle.pn, index)})
-        # join similar wires from all the bundles to a single BOM item
-        wire_group = lambda w: (w.get('type', None), w['gauge'], w['gauge_unit'], w['color'], w['manufacturer'], w['mpn'], w['pn'])
-        for group in Counter([wire_group(v) for v in wirelist]):
-            items = [v for v in wirelist if wire_group(v) == group]
-            shared = items[0]
-            designators = [i['designator'] for i in items]
-            designators = list(dict.fromkeys(designators))  # remove duplicates
-            designators.sort()
-            total_length = sum(i['length'] for i in items)
-            wire_type = f', {remove_line_breaks(shared["type"])}' if shared.get('type', None) else ''
-            gauge_name = f', {shared["gauge"]} {shared["gauge_unit"]}' if shared.get('gauge', None) else ''
-            gauge_color = f', {shared["color"]}' if 'color' in shared != '' else ''
-            name = f'Wire{wire_type}{gauge_name}{gauge_color}'
-            item = {'item': name, 'qty': round(total_length, 3), 'unit': 'm', 'designators': designators,
-                    'manufacturer': shared['manufacturer'], 'mpn': shared['mpn'], 'pn': shared['pn']}
-            bom_cables.append(item)
-            bom_cables = sorted(bom_cables, key=lambda k: k['item'])  # sort list of dicts by their values (https://stackoverflow.com/a/73050)
-        bom.extend(bom_cables)
-
-        for item in self.additional_bom_items:
-            name = item['description'] if item.get('description', None) else ''
-            if isinstance(item.get('designators', None), List):
-                item['designators'].sort()  # sort designators if a list is provided
-            item = {'item': name, 'qty': item.get('qty', None), 'unit': item.get('unit', None), 'designators': item.get('designators', None),
-                    'manufacturer': item.get('manufacturer', None), 'mpn': item.get('mpn', None), 'pn': item.get('pn', None)}
-            bom_extra.append(item)
-        bom_extra = sorted(bom_extra, key=lambda k: k['item'])
-        bom.extend(bom_extra)
-        return bom
-
-    def bom_list(self):
-        bom = self.bom()
-        keys = ['item', 'qty', 'unit', 'designators'] # these BOM columns will always be included
-        for fieldname in ['pn', 'manufacturer', 'mpn']: # these optional BOM columns will only be included if at least one BOM item actually uses them
-            if any(fieldname in x and x.get(fieldname, None) for x in bom):
-                keys.append(fieldname)
-        bom_list = []
-        # list of staic bom header names,  headers not specified here are generated by capitilising the internal name
-        bom_headings = {
-            "pn": "P/N",
-            "mpn": "MPN"
-        }
-        bom_list.append([(bom_headings[k] if k in bom_headings else k.capitalize()) for k in keys])  # create header row with keys
-        for item in bom:
-            item_list = [item.get(key, '') for key in keys]  # fill missing values with blanks
-            item_list = [', '.join(subitem) if isinstance(subitem, List) else subitem for subitem in item_list]  # convert any lists into comma separated strings
-            item_list = ['' if subitem is None else subitem for subitem in item_list]  # if a field is missing for some (but not all) BOM items
-            bom_list.append(item_list)
-        return bom_list
+        if not self._bom:
+            self._bom = generate_bom(self)
+        return self._bom
diff --git a/src/wireviz/__init__.py b/src/wireviz/__init__.py
index 81e82a06..fcc7f3bd 100644
--- a/src/wireviz/__init__.py
+++ b/src/wireviz/__init__.py
@@ -1,6 +1,7 @@
+# -*- coding: utf-8 -*-
 # Please don't import anything in this file to avoid issues when it is imported in setup.py
 
-__version__ = '0.2'
+__version__ = '0.3'
 
 CMD_NAME = 'wireviz'  # Lower case command and module name
 APP_NAME = 'WireViz'  # Application name in texts meant to be human readable
diff --git a/src/wireviz/build_examples.py b/src/wireviz/build_examples.py
index 4195b121..65a10f6b 100755
--- a/src/wireviz/build_examples.py
+++ b/src/wireviz/build_examples.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 import argparse
diff --git a/src/wireviz/wireviz.py b/src/wireviz/wireviz.py
index 9ecef5a0..95674945 100755
--- a/src/wireviz/wireviz.py
+++ b/src/wireviz/wireviz.py
@@ -13,6 +13,7 @@
     sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..'))
 
 from wireviz import __version__
+from wireviz.DataClasses import Metadata, Options, Tweak
 from wireviz.Harness import Harness
 from wireviz.wv_helper import expand, open_file_read
 
@@ -34,7 +35,13 @@ def parse(yaml_input: str, file_out: (str, Path) = None, return_types: (None, st
 
     yaml_data = yaml.safe_load(yaml_input)
 
-    harness = Harness()
+    harness = Harness(
+        metadata = Metadata(**yaml_data.get('metadata', {})),
+        options = Options(**yaml_data.get('options', {})),
+        tweak = Tweak(**yaml_data.get('tweak', {})),
+    )
+    if 'title' not in harness.metadata:
+        harness.metadata['title'] = Path(file_out).stem
 
     # add items
     sections = ['connectors', 'cables', 'connections']
diff --git a/src/wireviz/wv_bom.py b/src/wireviz/wv_bom.py
new file mode 100644
index 00000000..56df752d
--- /dev/null
+++ b/src/wireviz/wv_bom.py
@@ -0,0 +1,203 @@
+# -*- coding: utf-8 -*-
+
+from dataclasses import asdict
+from itertools import groupby
+from typing import Any, Dict, List, Optional, Tuple, Union
+
+from wireviz.DataClasses import AdditionalComponent, Cable, Color, Connector
+from wireviz.wv_colors import translate_color
+from wireviz.wv_gv_html import html_bgcolor_attr, html_line_breaks
+from wireviz.wv_helper import clean_whitespace
+
+BOM_COLUMNS_ALWAYS = ('id', 'description', 'qty', 'unit', 'designators')
+BOM_COLUMNS_OPTIONAL = ('pn', 'manufacturer', 'mpn', 'supplier', 'spn')
+BOM_COLUMNS_IN_KEY = ('description', 'unit') + BOM_COLUMNS_OPTIONAL
+
+HEADER_PN = 'P/N'
+HEADER_MPN = 'MPN'
+HEADER_SPN = 'SPN'
+
+BOMKey = Tuple[str, ...]
+BOMColumn = str  # = Literal[*BOM_COLUMNS_ALWAYS, *BOM_COLUMNS_OPTIONAL]
+BOMEntry = Dict[BOMColumn, Union[str, int, float, List[str], None]]
+
+def optional_fields(part: Union[Connector, Cable, AdditionalComponent]) -> BOMEntry:
+    """Return part field values for the optional BOM columns as a dict."""
+    part = asdict(part)
+    return {field: part.get(field) for field in BOM_COLUMNS_OPTIONAL}
+
+def get_additional_component_table(harness: "Harness", component: Union[Connector, Cable]) -> List[str]:
+    """Return a list of diagram node table row strings with additional components."""
+    rows = []
+    if component.additional_components:
+        rows.append(["Additional components"])
+        for part in component.additional_components:
+            common_args = {
+                'qty': part.qty * component.get_qty_multiplier(part.qty_multiplier),
+                'unit': part.unit,
+                'bgcolor': part.bgcolor,
+            }
+            if harness.options.mini_bom_mode:
+                id = get_bom_index(harness.bom(), bom_entry_key({**asdict(part), 'description': part.description}))
+                rows.append(component_table_entry(f'#{id} ({part.type.rstrip()})', **common_args))
+            else:
+                rows.append(component_table_entry(part.description, **common_args, **optional_fields(part)))
+    return rows
+
+def get_additional_component_bom(component: Union[Connector, Cable]) -> List[BOMEntry]:
+    """Return a list of BOM entries with additional components."""
+    bom_entries = []
+    for part in component.additional_components:
+        bom_entries.append({
+            'description': part.description,
+            'qty': part.qty * component.get_qty_multiplier(part.qty_multiplier),
+            'unit': part.unit,
+            'designators': component.name if component.show_name else None,
+            **optional_fields(part),
+        })
+    return bom_entries
+
+def bom_entry_key(entry: BOMEntry) -> BOMKey:
+    """Return a tuple of string values from the dict that must be equal to join BOM entries."""
+    if 'key' not in entry:
+        entry['key'] = tuple(clean_whitespace(make_str(entry.get(c))) for c in BOM_COLUMNS_IN_KEY)
+    return entry['key']
+
+def generate_bom(harness: "Harness") -> List[BOMEntry]:
+    """Return a list of BOM entries generated from the harness."""
+    from wireviz.Harness import Harness  # Local import to avoid circular imports
+    bom_entries = []
+    # connectors
+    for connector in harness.connectors.values():
+        if not connector.ignore_in_bom:
+            description = ('Connector'
+                           + (f', {connector.type}' if connector.type else '')
+                           + (f', {connector.subtype}' if connector.subtype else '')
+                           + (f', {connector.pincount} pins' if connector.show_pincount else '')
+                           + (f', {translate_color(connector.color, harness.options.color_mode)}' if connector.color else ''))
+            bom_entries.append({
+                'description': description, 'designators': connector.name if connector.show_name else None,
+                **optional_fields(connector),
+            })
+
+        # add connectors aditional components to bom
+        bom_entries.extend(get_additional_component_bom(connector))
+
+    # cables
+    # TODO: If category can have other non-empty values than 'bundle', maybe it should be part of description?
+    for cable in harness.cables.values():
+        if not cable.ignore_in_bom:
+            if cable.category != 'bundle':
+                # process cable as a single entity
+                description = ('Cable'
+                               + (f', {cable.type}' if cable.type else '')
+                               + (f', {cable.wirecount}')
+                               + (f' x {cable.gauge} {cable.gauge_unit}' if cable.gauge else ' wires')
+                               + ( ' shielded' if cable.shield else '')
+                               + (f', {translate_color(cable.color, harness.options.color_mode)}' if cable.color else ''))
+                bom_entries.append({
+                    'description': description, 'qty': cable.length, 'unit': cable.length_unit, 'designators': cable.name if cable.show_name else None,
+                    **optional_fields(cable),
+                })
+            else:
+                # add each wire from the bundle to the bom
+                for index, color in enumerate(cable.colors):
+                    description = ('Wire'
+                                   + (f', {cable.type}' if cable.type else '')
+                                   + (f', {cable.gauge} {cable.gauge_unit}' if cable.gauge else '')
+                                   + (f', {translate_color(color, harness.options.color_mode)}' if color else ''))
+                    bom_entries.append({
+                        'description': description, 'qty': cable.length, 'unit': cable.length_unit, 'designators': cable.name if cable.show_name else None,
+                        **{k: index_if_list(v, index) for k, v in optional_fields(cable).items()},
+                    })
+
+        # add cable/bundles aditional components to bom
+        bom_entries.extend(get_additional_component_bom(cable))
+
+    # add harness aditional components to bom directly, as they both are List[BOMEntry]
+    bom_entries.extend(harness.additional_bom_items)
+
+    # remove line breaks if present and cleanup any resulting whitespace issues
+    bom_entries = [{k: clean_whitespace(v) for k, v in entry.items()} for entry in bom_entries]
+
+    # deduplicate bom
+    bom = []
+    for _, group in groupby(sorted(bom_entries, key=bom_entry_key), key=bom_entry_key):
+        group_entries = list(group)
+        designators = sum((make_list(entry.get('designators')) for entry in group_entries), [])
+        total_qty = sum(entry.get('qty', 1) for entry in group_entries)
+        bom.append({**group_entries[0], 'qty': round(total_qty, 3), 'designators': sorted(set(designators))})
+
+    # add an incrementing id to each bom entry
+    return [{**entry, 'id': index} for index, entry in enumerate(bom, 1)]
+
+def get_bom_index(bom: List[BOMEntry], target: BOMKey) -> int:
+    """Return id of BOM entry or raise exception if not found."""
+    for entry in bom:
+        if bom_entry_key(entry) == target:
+            return entry['id']
+    raise Exception('Internal error: No BOM entry found matching: ' + '|'.join(target))
+
+def bom_list(bom: List[BOMEntry]) -> List[List[str]]:
+    """Return list of BOM rows as lists of column strings with headings in top row."""
+    keys = list(BOM_COLUMNS_ALWAYS)  # Always include this fixed set of BOM columns.
+    for fieldname in BOM_COLUMNS_OPTIONAL:  # Include only those optional BOM columns that are in use.
+        if any(entry.get(fieldname) for entry in bom):
+            keys.append(fieldname)
+    # Custom mapping from internal name to BOM column headers.
+    # Headers not specified here are generated by capitilising the internal name.
+    bom_headings = {
+        'pn': HEADER_PN,
+        'mpn': HEADER_MPN,
+        'spn': HEADER_SPN,
+    }
+    return ([[bom_headings.get(k, k.capitalize()) for k in keys]] +  # Create header row with key names
+            [[make_str(entry.get(k)) for k in keys] for entry in bom])  # Create string list for each entry row
+
+def component_table_entry(
+        type: str,
+        qty: Union[int, float],
+        unit: Optional[str] = None,
+        bgcolor: Optional[Color] = None,
+        pn: Optional[str] = None,
+        manufacturer: Optional[str] = None,
+        mpn: Optional[str] = None,
+        supplier: Optional[str] = None,
+        spn: Optional[str] = None,
+    ) -> str:
+    """Return a diagram node table row string with an additional component."""
+    part_number_list = [
+        pn_info_string(HEADER_PN, None, pn),
+        pn_info_string(HEADER_MPN, manufacturer, mpn),
+        pn_info_string(HEADER_SPN, supplier, spn),
+    ]
+    output = (f'{qty}'
+              + (f' {unit}' if unit else '')
+              + f' x {type}'
+              + ('<br/>' if any(part_number_list) else '')
+              + (', '.join([pn for pn in part_number_list if pn])))
+    # format the above output as left aligned text in a single visible cell
+    # indent is set to two to match the indent in the generated html table
+    return f'''<table border="0" cellspacing="0" cellpadding="3" cellborder="1"{html_bgcolor_attr(bgcolor)}><tr>
+   <td align="left" balign="left">{html_line_breaks(output)}</td>
+  </tr></table>'''
+
+def pn_info_string(header: str, name: Optional[str], number: Optional[str]) -> Optional[str]:
+    """Return the company name and/or the part number in one single string or None otherwise."""
+    number = str(number).strip() if number is not None else ''
+    if name or number:
+        return f'{name if name else header}{": " + number if number else ""}'
+    else:
+        return None
+
+def index_if_list(value: Any, index: int) -> Any:
+    """Return the value indexed if it is a list, or simply the value otherwise."""
+    return value[index] if isinstance(value, list) else value
+
+def make_list(value: Any) -> list:
+    """Return value if a list, empty list if None, or single element list otherwise."""
+    return value if isinstance(value, list) else [] if value is None else [value]
+
+def make_str(value: Any) -> str:
+    """Return comma separated elements if a list, empty string if None, or value as a string otherwise."""
+    return ', '.join(str(element) for element in make_list(value))
diff --git a/src/wireviz/wv_colors.py b/src/wireviz/wv_colors.py
index eb3b106e..e07ed53e 100644
--- a/src/wireviz/wv_colors.py
+++ b/src/wireviz/wv_colors.py
@@ -1,7 +1,6 @@
-#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-import sys
+from typing import Dict, List
 
 COLOR_CODES = {
     'DIN': ['WH', 'BN', 'GN', 'YE', 'GY', 'PK', 'BU', 'RD', 'BK', 'VT', 'GYPK', 'RDBU', 'WHGN', 'BNGN', 'WHYE', 'YEBN',
@@ -107,27 +106,61 @@
 
 color_default = '#ffffff'
 
+_hex_digits = set('0123456789abcdefABCDEF')
 
-def get_color_hex(input, pad=False):
+
+# Literal type aliases below are commented to avoid requiring python 3.8
+Color = str  # Two-letter color name = Literal[_color_hex.keys()]
+Colors = str  # One or more two-letter color names (Color) concatenated into one string
+ColorMode = str  # = Literal['full', 'FULL', 'hex', 'HEX', 'short', 'SHORT', 'ger', 'GER']
+ColorScheme = str  # Color scheme name = Literal[COLOR_CODES.keys()]
+
+
+def get_color_hex(input: Colors, pad: bool = False) -> List[str]:
+    """Return list of hex colors from either a string of color names or :-separated hex colors."""
     if input is None or input == '':
         return [color_default]
+    elif input[0] == '#':  # Hex color(s)
+        output = input.split(':')
+        for i, c in enumerate(output):
+            if c[0] != '#' or not all(d in _hex_digits for d in c[1:]):
+                if c != input:
+                    c += f' in input: {input}'
+                print(f'Invalid hex color: {c}')
+                output[i] = color_default
+    else:  # Color name(s)
+        def lookup(c: str) -> str:
+            try:
+                return _color_hex[c]
+            except KeyError:
+                if c != input:
+                    c += f' in input: {input}'
+                print(f'Unknown color name: {c}')
+                return color_default
 
-    if len(input) == 4:  # give wires with EXACTLY 2 colors that striped/banded look
-        padded = input + input[:2]
-    elif pad and len(input) == 2: # hacky style fix: give single color wires a triple-up so that wires are the same size
-        padded = input + input + input
-    else:
-        padded = input
+        output = [lookup(input[i:i + 2]) for i in range(0, len(input), 2)]
+
+    if len(output) == 2:  # Give wires with EXACTLY 2 colors that striped look.
+        output += output[:1]
+    elif pad and len(output) == 1:  # Hacky style fix: Give single color wires
+        output *= 3                 # a triple-up so that wires are the same size.
 
-    try:
-        output = [_color_hex[padded[i:i + 2]] for i in range(0, len(padded), 2)]
-    except KeyError:
-        print(f'Unknown color specified: {input}')
-        output = [color_default]
     return output
 
 
-def translate_color(input, color_mode):
+def get_color_translation(translate: Dict[Color, str], input: Colors) -> List[str]:
+    """Return list of colors translations from either a string of color names or :-separated hex colors."""
+    def from_hex(hex_input: str) -> str:
+        for color, hex in _color_hex.items():
+            if hex == hex_input:
+                return translate[color]
+        return f'({",".join(str(int(hex_input[i:i+2], 16)) for i in range(1, 6, 2))})'
+
+    return [from_hex(h) for h in input.lower().split(':')] if input[0] == '#' else \
+           [translate.get(input[i:i+2], '??') for i in range(0, len(input), 2)]
+
+
+def translate_color(input: Colors, color_mode: ColorMode) -> str:
     if input == '' or input is None:
         return ''
     upper = color_mode.isupper()
@@ -136,11 +169,11 @@ def translate_color(input, color_mode):
 
     color_mode = color_mode.lower()
     if color_mode == 'full':
-        output = "/".join([_color_full[input[i:i+2]] for i in range(0,len(input),2)])
+        output = "/".join(get_color_translation(_color_full, input))
     elif color_mode == 'hex':
         output = ':'.join(get_color_hex(input, pad=False))
     elif color_mode == 'ger':
-        output = "".join([_color_ger[input[i:i+2]] for i in range(0,len(input),2)])
+        output = "".join(get_color_translation(_color_ger, input))
     elif color_mode == 'short':
         output = input
     else:
diff --git a/src/wireviz/wv_gv_html.py b/src/wireviz/wv_gv_html.py
new file mode 100644
index 00000000..0b843db5
--- /dev/null
+++ b/src/wireviz/wv_gv_html.py
@@ -0,0 +1,76 @@
+# -*- coding: utf-8 -*-
+
+from typing import List, Optional, Union
+import re
+
+from wireviz.DataClasses import Color
+from wireviz.wv_colors import translate_color
+from wireviz.wv_helper import remove_links
+
+def nested_html_table(rows: List[Union[str, List[Optional[str]], None]], table_attrs: str = '') -> str:
+    # input: list, each item may be scalar or list
+    # output: a parent table with one child table per parent item that is list, and one cell per parent item that is scalar
+    # purpose: create the appearance of one table, where cell widths are independent between rows
+    # attributes in any leading <tdX> inside a list are injected into to the preceeding <td> tag
+    html = []
+    html.append(f'<table border="0" cellspacing="0" cellpadding="0"{table_attrs or ""}>')
+    for row in rows:
+        if isinstance(row, List):
+            if len(row) > 0 and any(row):
+                html.append(' <tr><td>')
+                html.append('  <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>')
+                for cell in row:
+                    if cell is not None:
+                        # Inject attributes to the preceeding <td> tag where needed
+                        html.append(f'   <td balign="left">{cell}</td>'.replace('><tdX', ''))
+                html.append('  </tr></table>')
+                html.append(' </td></tr>')
+        elif row is not None:
+            html.append(' <tr><td>')
+            html.append(f'  {row}')
+            html.append(' </td></tr>')
+    html.append('</table>')
+    return html
+
+def html_bgcolor_attr(color: Color) -> str:
+    """Return attributes for bgcolor or '' if no color."""
+    return f' bgcolor="{translate_color(color, "HEX")}"' if color else ''
+
+def html_bgcolor(color: Color, _extra_attr: str = '') -> str:
+    """Return <td> attributes prefix for bgcolor or '' if no color."""
+    return f'<tdX{html_bgcolor_attr(color)}{_extra_attr}>' if color else ''
+
+def html_colorbar(color: Color) -> str:
+    """Return <tdX> attributes prefix for bgcolor and minimum width or None if no color."""
+    return html_bgcolor(color, ' width="4"') if color else None
+
+def html_image(image):
+    from wireviz.DataClasses import Image
+    if not image:
+        return None
+    # The leading attributes belong to the preceeding tag. See where used below.
+    html = f'{html_size_attr(image)}><img scale="{image.scale}" src="{image.src}"/>'
+    if image.fixedsize:
+        # Close the preceeding tag and enclose the image cell in a table without
+        # borders to avoid narrow borders when the fixed width < the node width.
+        html = f'''>
+    <table border="0" cellspacing="0" cellborder="0"><tr>
+     <td{html}</td>
+    </tr></table>
+   '''
+    return f'''<tdX{' sides="TLR"' if image.caption else ''}{html_bgcolor_attr(image.bgcolor)}{html}'''
+
+def html_caption(image):
+    from wireviz.DataClasses import Image
+    return (f'<tdX sides="BLR"{html_bgcolor_attr(image.bgcolor)}>{html_line_breaks(image.caption)}'
+                if image and image.caption else None)
+
+def html_size_attr(image):
+    from wireviz.DataClasses import Image
+    # Return Graphviz HTML attributes to specify minimum or fixed size of a TABLE or TD object
+    return ((f' width="{image.width}"'   if image.width else '')
+        +   (f' height="{image.height}"' if image.height else '')
+        +   ( ' fixedsize="true"'        if image.fixedsize else '')) if image else ''
+
+def html_line_breaks(inp):
+    return remove_links(inp).replace('\n', '<br />') if isinstance(inp, str) else inp
diff --git a/src/wireviz/wv_helper.py b/src/wireviz/wv_helper.py
index 8385f7e9..6b78f173 100644
--- a/src/wireviz/wv_helper.py
+++ b/src/wireviz/wv_helper.py
@@ -1,8 +1,7 @@
-#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from wireviz import wv_colors
 from typing import List
+import re
 
 awg_equiv_table = {
     '0.09': '28',
@@ -31,58 +30,6 @@ def awg_equiv(mm2):
 def mm2_equiv(awg):
     return mm2_equiv_table.get(str(awg), 'Unknown')
 
-def nested_html_table(rows):
-    # input: list, each item may be scalar or list
-    # output: a parent table with one child table per parent item that is list, and one cell per parent item that is scalar
-    # purpose: create the appearance of one table, where cell widths are independent between rows
-    # attributes in any leading <tdX> inside a list are injected into to the preceeding <td> tag
-    html = []
-    html.append('<table border="0" cellspacing="0" cellpadding="0">')
-    for row in rows:
-        if isinstance(row, List):
-            if len(row) > 0 and any(row):
-                html.append(' <tr><td>')
-                html.append('  <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>')
-                for cell in row:
-                    if cell is not None:
-                        # Inject attributes to the preceeding <td> tag where needed
-                        html.append(f'   <td balign="left">{cell}</td>'.replace('><tdX', ''))
-                html.append('  </tr></table>')
-                html.append(' </td></tr>')
-        elif row is not None:
-            html.append(' <tr><td>')
-            html.append(f'  {row}')
-            html.append(' </td></tr>')
-    html.append('</table>')
-    return html
-
-def html_colorbar(color):
-    return f'<tdX bgcolor="{wv_colors.translate_color(color, "HEX")}" width="4">' if color else None
-
-def html_image(image):
-    if not image:
-        return None
-    # The leading attributes belong to the preceeding tag. See where used below.
-    html = f'{html_size_attr(image)}><img scale="{image.scale}" src="{image.src}"/>'
-    if image.fixedsize:
-        # Close the preceeding tag and enclose the image cell in a table without
-        # borders to avoid narrow borders when the fixed width < the node width.
-        html = f'''>
-    <table border="0" cellspacing="0" cellborder="0"><tr>
-     <td{html}</td>
-    </tr></table>
-   '''
-    return f'''<tdX{' sides="TLR"' if image.caption else ''}{html}'''
-
-def html_caption(image):
-    return f'<tdX sides="BLR">{html_line_breaks(image.caption)}' if image and image.caption else None
-
-def html_size_attr(image):
-    # Return Graphviz HTML attributes to specify minimum or fixed size of a TABLE or TD object
-    return ((f' width="{image.width}"'   if image.width else '')
-        +   (f' height="{image.height}"' if image.height else '')
-        +   ( ' fixedsize="true"'        if image.fixedsize else '')) if image else ''
-
 
 def expand(yaml_data):
     # yaml_data can be:
@@ -136,21 +83,17 @@ def tuplelist2tsv(inp, header=None):
         inp.insert(0, header)
     inp = flatten2d(inp)
     for row in inp:
-        output = output + '\t'.join(str(item) for item in row) + '\n'
+        output = output + '\t'.join(str(remove_links(item)) for item in row) + '\n'
     return output
 
-# Return the value indexed if it is a list, or simply the value otherwise.
-def index_if_list(value, index):
-    return value[index] if isinstance(value, list) else value
 
-def html_line_breaks(inp):
-    return inp.replace('\n', '<br />') if isinstance(inp, str) else inp
+def remove_links(inp):
+    return re.sub(r'<[aA] [^>]*>([^<]*)</[aA]>', r'\1', inp) if isinstance(inp, str) else inp
+
 
-def graphviz_line_breaks(inp):
-    return inp.replace('\n', '\\n') if isinstance(inp, str) else inp # \n generates centered new lines. http://www.graphviz.org/doc/info/attrs.html#k:escString
+def clean_whitespace(inp):
+    return ' '.join(inp.split()).replace(' ,', ',') if isinstance(inp, str) else inp
 
-def remove_line_breaks(inp):
-    return inp.replace('\n', ' ').strip() if isinstance(inp, str) else inp
 
 def open_file_read(filename):
     # TODO: Intelligently determine encoding
@@ -162,7 +105,6 @@ def open_file_write(filename):
 def open_file_append(filename):
     return open(filename, 'a', encoding='UTF-8')
 
-
 def aspect_ratio(image_src):
     try:
         from PIL import Image
@@ -174,10 +116,3 @@ def aspect_ratio(image_src):
     except Exception as error:
         print(f'aspect_ratio(): {type(error).__name__}: {error}')
     return 1 # Assume 1:1 when unable to read actual image size
-
-
-def manufacturer_info_field(manufacturer, mpn):
-    if manufacturer or mpn:
-        return f'{manufacturer if manufacturer else "MPN"}{": " + str(mpn) if mpn else ""}'
-    else:
-        return None
diff --git a/src/wireviz/wv_html.py b/src/wireviz/wv_html.py
new file mode 100644
index 00000000..0b819746
--- /dev/null
+++ b/src/wireviz/wv_html.py
@@ -0,0 +1,54 @@
+# -*- coding: utf-8 -*-
+
+from pathlib import Path
+from typing import List, Union
+import re
+
+from wireviz import __version__, APP_NAME, APP_URL, wv_colors
+from wireviz.DataClasses import Metadata, Options
+from wireviz.wv_helper import flatten2d, open_file_read, open_file_write
+
+def generate_html_output(filename: Union[str, Path], bom_list: List[List[str]], metadata: Metadata, options: Options):
+    with open_file_write(f'{filename}.html') as file:
+        file.write('<!DOCTYPE html>\n')
+        file.write('<html lang="en"><head>\n')
+        file.write(' <meta charset="UTF-8">\n')
+        file.write(f' <meta name="generator" content="{APP_NAME} {__version__} - {APP_URL}">\n')
+        file.write(f' <title>{metadata["title"]}</title>\n')
+        file.write(f'</head><body style="font-family:{options.fontname};background-color:'
+                   f'{wv_colors.translate_color(options.bgcolor, "HEX")}">\n')
+
+        file.write(f'<h1>{metadata["title"]}</h1>\n')
+        description = metadata.get('description')
+        if description:
+            file.write(f'<p>{description}</p>\n')
+        file.write('<h2>Diagram</h2>\n')
+        with open_file_read(f'{filename}.svg') as svg:
+            file.write(re.sub(
+                '^<[?]xml [^?>]*[?]>[^<]*<!DOCTYPE [^>]*>',
+                '<!-- XML and DOCTYPE declarations from SVG file removed -->',
+                svg.read(1024), 1))
+            for svgdata in svg:
+                file.write(svgdata)
+
+        file.write('<h2>Bill of Materials</h2>\n')
+        listy = flatten2d(bom_list)
+        file.write('<table style="border:1px solid #000000; font-size: 14pt; border-spacing: 0px">\n')
+        file.write(' <tr>\n')
+        for item in listy[0]:
+            file.write(f'  <th style="text-align:left; border:1px solid #000000; padding: 8px">{item}</th>\n')
+        file.write(' </tr>\n')
+        for row in listy[1:]:
+            file.write(' <tr>\n')
+            for i, item in enumerate(row):
+                item_str = item.replace('\u00b2', '&sup2;')
+                align = '; text-align:right' if listy[0][i] == 'Qty' else ''
+                file.write(f'  <td style="border:1px solid #000000; padding: 4px{align}">{item_str}</td>\n')
+            file.write(' </tr>\n')
+        file.write('</table>\n')
+
+        notes = metadata.get('notes')
+        if notes:
+            file.write(f'<h2>Notes</h2>\n<p>{notes}</p>\n')
+
+        file.write('</body></html>\n')
diff --git a/tutorial/readme.md b/tutorial/readme.md
index 5361dfa7..ee64faf5 100644
--- a/tutorial/readme.md
+++ b/tutorial/readme.md
@@ -324,25 +324,47 @@ connections:
 [Source](tutorial07.yml) - [Bill of Materials](tutorial07.bom.tsv)
 
 
-## 08 - Part numbers
+## 08 - Part numbers and additional components
 
 * Part number information can be added to parts
   * Only provided fields will be added to the diagram and bom
 * Bundles can have part information specified by wire
-* Additional parts can be added to the bom
+* Additional parts can be added to components or just to the bom
+  * quantities of additional components can be multiplied by features from parent connector or cable
 
 
 ```yaml
+options:
+  mini_bom_mode: false
+
 connectors:
   X1: &template1 # define a template for later use
     type: Molex KK 254
     pincount: 4
     subtype: female
-    manufacturer: Molex # set manufacter name
-    mpn: 22013047 # set manufacturer part number
+    manufacturer: '<a href="https://www.molex.com/">Molex</a>' # set manufacter name
+    mpn: '<a href="https://www.molex.com/molex/products/part-detail/crimp_housings/0022013047">22013047</a>' # set manufacturer part number
+    supplier: Digimouse
+    spn: 1234
+    # add a list of additional components to a part (shown in graph)
+    additional_components:
+      -
+        type: Crimp # short identifier used in graph
+        subtype: Molex KK 254, 22-30 AWG # extra information added to type in bom
+        qty_multiplier: populated # multipier for quantity (number of populated pins)
+        manufacturer: Molex # set manufacter name
+        mpn: 08500030 # set manufacturer part number
+      -
+        type: Test
+        qty: 1
+        pn: ABC
+        manufacturer: Molex
+        mpn: 45454
+        supplier: Mousikey
+        spn: 9999
   X2:
     <<: *template1 # reuse template
-    pn: CON4 # set an internal part number
+    pn: CON4 # set an internal part number for just this connector
   X3:
     <<: *template1 # reuse template
 
@@ -354,6 +376,8 @@ cables:
     color_code: IEC
     manufacturer: CablesCo
     mpn: ABC123
+    supplier: Cables R Us
+    spn: 999-888-777
     pn: CAB1
   W2:
     category: bundle
@@ -362,7 +386,17 @@ cables:
     colors: [YE, BK, BK, RD]
     manufacturer: [WiresCo,WiresCo,WiresCo,WiresCo] # set a manufacter per wire
     mpn: [W1-YE,W1-BK,W1-BK,W1-RD]
+    supplier: [WireShack,WireShack,WireShack,WireShack]
+    spn: [1001,1002,1002,1009]
     pn: [WIRE1,WIRE2,WIRE2,WIRE3]
+    # add a list of additional components to a part (shown in graph)
+    additional_components:
+      -
+        type: Sleve # short identifier used in graph
+        subtype: Braided nylon, black, 3mm # extra information added to type in bom
+        qty_multiplier: length # multipier for quantity (length of cable)
+        unit: m
+        pn: SLV-1
 
 
 connections:
@@ -376,14 +410,14 @@ connections:
     - X3: [1-4]
 
 additional_bom_items:
-  - # define an additional item to add to the bill of materials
+  - # define an additional item to add to the bill of materials (does not appear in graph)
     description: Label, pinout information
     qty: 2
     designators:
       - X2
       - X3
-    manufacturer: generic company
-    mpn: Label1
+    manufacturer: '<a href="https://www.bradyid.com">Brady</a>'
+    mpn: '<a href="https://www.bradyid.com/wire-cable-labels/bmp71-bmp61-m611-tls-2200-nylon-cloth-wire-general-id-labels-cps-2958789">B-499</a>'
     pn: Label-ID-1
 ```
 
diff --git a/tutorial/tutorial01.bom.tsv b/tutorial/tutorial01.bom.tsv
index ff469a84..78d7659e 100644
--- a/tutorial/tutorial01.bom.tsv
+++ b/tutorial/tutorial01.bom.tsv
@@ -1,3 +1,3 @@
-Item	Qty	Unit	Designators
-Connector, 4 pins	2		X1, X2
-Cable, 4 wires	1	m	W1
+Id	Description	Qty	Unit	Designators
+1	Cable, 4 wires	1	m	W1
+2	Connector, 4 pins	2		X1, X2
diff --git a/tutorial/tutorial01.gv b/tutorial/tutorial01.gv
index 0bff27c6..f2d449fa 100644
--- a/tutorial/tutorial01.gv
+++ b/tutorial/tutorial01.gv
@@ -1,8 +1,8 @@
 graph {
-// Graph generated by WireViz 0.2
+// Graph generated by WireViz 0.3
 // https://github.com/formatc1702/WireViz
-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
+	node [fillcolor="#FFFFFF" fontname=arial height=0 margin=0 shape=none style=filled width=0]
 	edge [fontname=arial style=bold]
 	X1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
@@ -33,7 +33,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X2 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -63,7 +63,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#ffffff:#000000"]
 	X1:p1r:e -- W1:w1:w
 	W1:w1:e -- X2:p1l:w
@@ -94,7 +94,9 @@ graph {
    <tr><td>&nbsp;</td></tr>
    <tr>
     <td>X1:1</td>
-    <td></td>
+    <td>
+     1
+    </td>
     <td>X2:1</td>
    </tr>
    <tr>
@@ -108,7 +110,9 @@ graph {
    </tr>
    <tr>
     <td>X1:2</td>
-    <td></td>
+    <td>
+     2
+    </td>
     <td>X2:2</td>
    </tr>
    <tr>
@@ -122,7 +126,9 @@ graph {
    </tr>
    <tr>
     <td>X1:3</td>
-    <td></td>
+    <td>
+     3
+    </td>
     <td>X2:3</td>
    </tr>
    <tr>
@@ -136,7 +142,9 @@ graph {
    </tr>
    <tr>
     <td>X1:4</td>
-    <td></td>
+    <td>
+     4
+    </td>
     <td>X2:4</td>
    </tr>
    <tr>
@@ -152,5 +160,5 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style=""]
+> fillcolor="#FFFFFF" shape=box style=filled]
 }
diff --git a/tutorial/tutorial01.html b/tutorial/tutorial01.html
index ea94b0dd..e051ef1d 100644
--- a/tutorial/tutorial01.html
+++ b/tutorial/tutorial01.html
@@ -1,140 +1,170 @@
 <!DOCTYPE html>
 <html lang="en"><head>
  <meta charset="UTF-8">
- <meta name="generator" content="WireViz 0.2 - https://github.com/formatc1702/WireViz">
- <title>WireViz Diagram and BOM</title>
-</head><body style="font-family:Arial">
-<h1>Diagram</h1><!-- XML and DOCTYPE declarations from SVG file removed -->
-<!-- Generated by graphviz version 2.44.1 (20200629.0846)
+ <meta name="generator" content="WireViz 0.3 - https://github.com/formatc1702/WireViz">
+ <title>tutorial01</title>
+</head><body style="font-family:arial;background-color:#FFFFFF">
+<h1>tutorial01</h1>
+<h2>Diagram</h2>
+<!-- XML and DOCTYPE declarations from SVG file removed -->
+<!-- Generated by graphviz version 2.49.0 (20210828.1703)
  -->
 <!-- Pages: 1 -->
-<svg width="472pt" height="192pt"
- viewBox="0.00 0.00 472.00 192.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<svg width="489pt" height="192pt"
+ viewBox="0.00 0.00 489.00 192.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
 <g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 188)">
-<polygon fill="white" stroke="transparent" points="-4,4 -4,-188 468,-188 468,4 -4,4"/>
+<polygon fill="#ffffff" stroke="transparent" points="-4,4 -4,-188 485,-188 485,4 -4,4"/>
 <!-- X1 -->
 <g id="node1" class="node">
 <title>X1</title>
-<polygon fill="white" stroke="transparent" points="54,-152 0,-152 0,-14 54,-14 54,-152"/>
-<polygon fill="none" stroke="black" points="8,-129 8,-152 47,-152 47,-129 8,-129"/>
-<text text-anchor="start" x="19" y="-136.8" font-family="arial" font-size="14.00">X1</text>
-<polygon fill="none" stroke="black" points="8,-106 8,-129 47,-129 47,-106 8,-106"/>
-<text text-anchor="start" x="12" y="-113.8" font-family="arial" font-size="14.00">4&#45;pin</text>
-<polygon fill="none" stroke="black" points="8,-83 8,-106 47,-106 47,-83 8,-83"/>
-<text text-anchor="start" x="23.5" y="-90.8" font-family="arial" font-size="14.00">1</text>
-<polygon fill="none" stroke="black" points="8,-60 8,-83 47,-83 47,-60 8,-60"/>
-<text text-anchor="start" x="23.5" y="-67.8" font-family="arial" font-size="14.00">2</text>
-<polygon fill="none" stroke="black" points="8,-37 8,-60 47,-60 47,-37 8,-37"/>
-<text text-anchor="start" x="23.5" y="-44.8" font-family="arial" font-size="14.00">3</text>
-<polygon fill="none" stroke="black" points="8,-14 8,-37 47,-37 47,-14 8,-14"/>
-<text text-anchor="start" x="23.5" y="-21.8" font-family="arial" font-size="14.00">4</text>
+<polygon fill="#ffffff" stroke="black" points="40,-152 0,-152 0,-14 40,-14 40,-152"/>
+<polygon fill="none" stroke="black" points="0,-129 0,-152 40,-152 40,-129 0,-129"/>
+<text text-anchor="start" x="11" y="-136.8" font-family="arial" font-size="14.00">X1</text>
+<polygon fill="none" stroke="black" points="0,-106 0,-129 40,-129 40,-106 0,-106"/>
+<text text-anchor="start" x="4" y="-113.8" font-family="arial" font-size="14.00">4&#45;pin</text>
+<polygon fill="none" stroke="black" points="0,-83 0,-106 40,-106 40,-83 0,-83"/>
+<text text-anchor="start" x="16" y="-90.8" font-family="arial" font-size="14.00">1</text>
+<polygon fill="none" stroke="black" points="0,-60 0,-83 40,-83 40,-60 0,-60"/>
+<text text-anchor="start" x="16" y="-67.8" font-family="arial" font-size="14.00">2</text>
+<polygon fill="none" stroke="black" points="0,-37 0,-60 40,-60 40,-37 0,-37"/>
+<text text-anchor="start" x="16" y="-44.8" font-family="arial" font-size="14.00">3</text>
+<polygon fill="none" stroke="black" points="0,-14 0,-37 40,-37 40,-14 0,-14"/>
+<text text-anchor="start" x="16" y="-21.8" font-family="arial" font-size="14.00">4</text>
 </g>
 <!-- W1 -->
 <g id="node3" class="node">
 <title>W1</title>
-<polygon fill="none" stroke="black" points="266,-184 198,-184 198,0 266,0 266,-184"/>
-<polygon fill="none" stroke="black" points="198,-161 198,-184 266,-184 266,-161 198,-161"/>
-<text text-anchor="start" x="221" y="-168.8" font-family="arial" font-size="14.00">W1</text>
-<polygon fill="none" stroke="black" points="198,-138 198,-161 228,-161 228,-138 198,-138"/>
-<text text-anchor="start" x="205.5" y="-145.8" font-family="arial" font-size="14.00">4x</text>
-<polygon fill="none" stroke="black" points="228,-138 228,-161 266,-161 266,-138 228,-138"/>
-<text text-anchor="start" x="235" y="-145.8" font-family="arial" font-size="14.00">1 m</text>
-<text text-anchor="start" x="212" y="-124.8" font-family="arial" font-size="14.00"> </text>
-<text text-anchor="start" x="200" y="-105.8" font-family="arial" font-size="14.00">X1:1</text>
-<text text-anchor="start" x="236" y="-105.8" font-family="arial" font-size="14.00">X2:1</text>
-<polygon fill="#000000" stroke="transparent" points="198,-98 198,-100 266,-100 266,-98 198,-98"/>
-<polygon fill="#ffffff" stroke="transparent" points="198,-96 198,-98 266,-98 266,-96 198,-96"/>
-<polygon fill="#000000" stroke="transparent" points="198,-94 198,-96 266,-96 266,-94 198,-94"/>
-<text text-anchor="start" x="200" y="-80.8" font-family="arial" font-size="14.00">X1:2</text>
-<text text-anchor="start" x="236" y="-80.8" font-family="arial" font-size="14.00">X2:2</text>
-<polygon fill="#000000" stroke="transparent" points="198,-73 198,-75 266,-75 266,-73 198,-73"/>
-<polygon fill="#ffffff" stroke="transparent" points="198,-71 198,-73 266,-73 266,-71 198,-71"/>
-<polygon fill="#000000" stroke="transparent" points="198,-69 198,-71 266,-71 266,-69 198,-69"/>
-<text text-anchor="start" x="200" y="-55.8" font-family="arial" font-size="14.00">X1:3</text>
-<text text-anchor="start" x="236" y="-55.8" font-family="arial" font-size="14.00">X2:3</text>
-<polygon fill="#000000" stroke="transparent" points="198,-48 198,-50 266,-50 266,-48 198,-48"/>
-<polygon fill="#ffffff" stroke="transparent" points="198,-46 198,-48 266,-48 266,-46 198,-46"/>
-<polygon fill="#000000" stroke="transparent" points="198,-44 198,-46 266,-46 266,-44 198,-44"/>
-<text text-anchor="start" x="200" y="-30.8" font-family="arial" font-size="14.00">X1:4</text>
-<text text-anchor="start" x="236" y="-30.8" font-family="arial" font-size="14.00">X2:4</text>
-<polygon fill="#000000" stroke="transparent" points="198,-23 198,-25 266,-25 266,-23 198,-23"/>
-<polygon fill="#ffffff" stroke="transparent" points="198,-21 198,-23 266,-23 266,-21 198,-21"/>
-<polygon fill="#000000" stroke="transparent" points="198,-19 198,-21 266,-21 266,-19 198,-19"/>
-<text text-anchor="start" x="212" y="-5.8" font-family="arial" font-size="14.00"> </text>
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diff --git a/tutorial/tutorial02.bom.tsv b/tutorial/tutorial02.bom.tsv
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-Connector, Molex KK 254, female, 4 pins	2		X1, X2
-Cable, 4 x 0.25 mm²	1	m	W1
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+1	Cable, 4 x 0.25 mm²	1	m	W1
+2	Connector, Molex KK 254, female, 4 pins	2		X1, X2
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+  <td style="border:1px solid #000000; padding: 4px; text-align:right">1</td>
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+  <td style="border:1px solid #000000; padding: 4px">W1</td>
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+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">2</td>
+  <td style="border:1px solid #000000; padding: 4px">Connector, Molex KK 254, female, 4 pins</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">2</td>
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+  <td style="border:1px solid #000000; padding: 4px">X1, X2</td>
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-<path fill="none" stroke="#000000" stroke-width="2" d="M513,-24C576.4,-22.87 590,-50.87 657,-52"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M518,-20C585,-21.13 598.6,-49.13 662,-48"/>
+<path fill="none" stroke="#ffff00" stroke-width="2" d="M518,-22C583.2,-22 596.8,-50 662,-50"/>
+<path fill="none" stroke="#000000" stroke-width="2" d="M518,-24C581.4,-22.87 595,-50.87 662,-52"/>
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diff --git a/tutorial/tutorial03.bom.tsv b/tutorial/tutorial03.bom.tsv
index a9c25a8e..51f8e366 100644
--- a/tutorial/tutorial03.bom.tsv
+++ b/tutorial/tutorial03.bom.tsv
@@ -1,3 +1,3 @@
-Item	Qty	Unit	Designators
-Connector, Molex KK 254, female, 4 pins	2		X1, X2
-Cable, 4 x 0.25 mm² shielded	1	m	W1
+Id	Description	Qty	Unit	Designators
+1	Cable, 4 x 0.25 mm² shielded	1	m	W1
+2	Connector, Molex KK 254, female, 4 pins	2		X1, X2
diff --git a/tutorial/tutorial03.gv b/tutorial/tutorial03.gv
index 42fe4e3f..d1937fa0 100644
--- a/tutorial/tutorial03.gv
+++ b/tutorial/tutorial03.gv
@@ -1,8 +1,8 @@
 graph {
-// Graph generated by WireViz 0.2
+// Graph generated by WireViz 0.3
 // https://github.com/formatc1702/WireViz
-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
+	node [fillcolor="#FFFFFF" fontname=arial height=0 margin=0 shape=none style=filled width=0]
 	edge [fontname=arial style=bold]
 	X1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
@@ -39,7 +39,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X2 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -75,7 +75,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#ffffff:#000000"]
 	X1:p1r:e -- W1:w1:w
 	W1:w1:e -- X2:p1l:w
@@ -109,9 +109,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:1</td>
-    <td>WH</td>
-    <td>X2:1</td>
+    <td>X1:1:GND</td>
+    <td>
+     1:WH
+    </td>
+    <td>X2:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -123,9 +125,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:2</td>
-    <td>BN</td>
-    <td>X2:2</td>
+    <td>X1:2:VCC</td>
+    <td>
+     2:BN
+    </td>
+    <td>X2:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -137,9 +141,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:3</td>
-    <td>GN</td>
-    <td>X2:4</td>
+    <td>X1:3:RX</td>
+    <td>
+     3:GN
+    </td>
+    <td>X2:4:TX</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w3" height="6">
@@ -151,9 +157,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:4</td>
-    <td>YE</td>
-    <td>X2:3</td>
+    <td>X1:4:TX</td>
+    <td>
+     4:YE
+    </td>
+    <td>X2:3:RX</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w4" height="6">
@@ -166,7 +174,7 @@ graph {
    </tr>
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:1</td>
+    <td>X1:1:GND</td>
     <td>Shield</td>
     <td><!-- s_out --></td>
    </tr>
@@ -175,5 +183,5 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style=""]
+> fillcolor="#FFFFFF" shape=box style=filled]
 }
diff --git a/tutorial/tutorial03.html b/tutorial/tutorial03.html
index 6da9e561..d876420e 100644
--- a/tutorial/tutorial03.html
+++ b/tutorial/tutorial03.html
@@ -1,181 +1,207 @@
 <!DOCTYPE html>
 <html lang="en"><head>
  <meta charset="UTF-8">
- <meta name="generator" content="WireViz 0.2 - https://github.com/formatc1702/WireViz">
- <title>WireViz Diagram and BOM</title>
-</head><body style="font-family:Arial">
-<h1>Diagram</h1><!-- XML and DOCTYPE declarations from SVG file removed -->
-<!-- Generated by graphviz version 2.44.1 (20200629.0846)
+ <meta name="generator" content="WireViz 0.3 - https://github.com/formatc1702/WireViz">
+ <title>tutorial03</title>
+</head><body style="font-family:arial;background-color:#FFFFFF">
+<h1>tutorial03</h1>
+<h2>Diagram</h2>
+<!-- XML and DOCTYPE declarations from SVG file removed -->
+<!-- Generated by graphviz version 2.49.0 (20210828.1703)
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 <!-- Pages: 1 -->
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- viewBox="0.00 0.00 877.00 232.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<svg width="887pt" height="232pt"
+ viewBox="0.00 0.00 887.00 232.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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-<polygon fill="white" stroke="transparent" points="-4,4 -4,-228 873,-228 873,4 -4,4"/>
+<polygon fill="#ffffff" stroke="transparent" points="-4,4 -4,-228 883,-228 883,4 -4,4"/>
 <!-- X1 -->
 <g id="node1" class="node">
 <title>X1</title>
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-<polygon fill="none" stroke="black" points="0,-168 0,-191 182,-191 182,-168 0,-168"/>
-<text text-anchor="start" x="82.5" y="-175.8" font-family="arial" font-size="14.00">X1</text>
-<polygon fill="none" stroke="black" points="0,-145 0,-168 93,-168 93,-145 0,-145"/>
-<text text-anchor="start" x="4" y="-152.8" font-family="arial" font-size="14.00">Molex KK 254</text>
-<polygon fill="none" stroke="black" points="93,-145 93,-168 143,-168 143,-145 93,-145"/>
-<text text-anchor="start" x="97" y="-152.8" font-family="arial" font-size="14.00">female</text>
-<polygon fill="none" stroke="black" points="143,-145 143,-168 182,-168 182,-145 143,-145"/>
-<text text-anchor="start" x="147" y="-152.8" font-family="arial" font-size="14.00">4&#45;pin</text>
-<polygon fill="none" stroke="black" points="0,-122 0,-145 103,-145 103,-122 0,-122"/>
-<text text-anchor="start" x="36" y="-129.8" font-family="arial" font-size="14.00">GND</text>
-<polygon fill="none" stroke="black" points="103,-122 103,-145 182,-145 182,-122 103,-122"/>
-<text text-anchor="start" x="138.5" y="-129.8" font-family="arial" font-size="14.00">1</text>
-<polygon fill="none" stroke="black" points="0,-99 0,-122 103,-122 103,-99 0,-99"/>
-<text text-anchor="start" x="37" y="-106.8" font-family="arial" font-size="14.00">VCC</text>
-<polygon fill="none" stroke="black" points="103,-99 103,-122 182,-122 182,-99 103,-99"/>
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-<text text-anchor="start" x="42.5" y="-60.8" font-family="arial" font-size="14.00">TX</text>
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-<text text-anchor="start" x="138.5" y="-60.8" font-family="arial" font-size="14.00">4</text>
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+<polygon fill="none" stroke="black" points="0.5,-168 0.5,-191 187.5,-191 187.5,-168 0.5,-168"/>
+<text text-anchor="start" x="85" y="-175.8" font-family="arial" font-size="14.00">X1</text>
+<polygon fill="none" stroke="black" points="0.5,-145 0.5,-168 96.5,-168 96.5,-145 0.5,-145"/>
+<text text-anchor="start" x="4.5" y="-152.8" font-family="arial" font-size="14.00">Molex KK 254</text>
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+<text text-anchor="start" x="100.5" y="-152.8" font-family="arial" font-size="14.00">female</text>
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+<text text-anchor="start" x="151.5" y="-152.8" font-family="arial" font-size="14.00">4&#45;pin</text>
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+<text text-anchor="start" x="37.5" y="-129.8" font-family="arial" font-size="14.00">GND</text>
+<polygon fill="none" stroke="black" points="106.5,-122 106.5,-145 187.5,-145 187.5,-122 106.5,-122"/>
+<text text-anchor="start" x="143" y="-129.8" font-family="arial" font-size="14.00">1</text>
+<polygon fill="none" stroke="black" points="0.5,-99 0.5,-122 106.5,-122 106.5,-99 0.5,-99"/>
+<text text-anchor="start" x="38.5" y="-106.8" font-family="arial" font-size="14.00">VCC</text>
+<polygon fill="none" stroke="black" points="106.5,-99 106.5,-122 187.5,-122 187.5,-99 106.5,-99"/>
+<text text-anchor="start" x="143" y="-106.8" font-family="arial" font-size="14.00">2</text>
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+<text text-anchor="start" x="43.5" y="-83.8" font-family="arial" font-size="14.00">RX</text>
+<polygon fill="none" stroke="black" points="106.5,-76 106.5,-99 187.5,-99 187.5,-76 106.5,-76"/>
+<text text-anchor="start" x="143" y="-83.8" font-family="arial" font-size="14.00">3</text>
+<polygon fill="none" stroke="black" points="0.5,-53 0.5,-76 106.5,-76 106.5,-53 0.5,-53"/>
+<text text-anchor="start" x="44.5" y="-60.8" font-family="arial" font-size="14.00">TX</text>
+<polygon fill="none" stroke="black" points="106.5,-53 106.5,-76 187.5,-76 187.5,-53 106.5,-53"/>
+<text text-anchor="start" x="143" y="-60.8" font-family="arial" font-size="14.00">4</text>
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 <g id="node3" class="node">
 <title>W1</title>
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-<polygon fill="none" stroke="black" points="326.5,-201 326.5,-224 543.5,-224 543.5,-201 326.5,-201"/>
-<text text-anchor="start" x="424" y="-208.8" font-family="arial" font-size="14.00">W1</text>
-<polygon fill="none" stroke="black" points="326.5,-178 326.5,-201 349.5,-201 349.5,-178 326.5,-178"/>
-<text text-anchor="start" x="330.5" y="-185.8" font-family="arial" font-size="14.00">4x</text>
-<polygon fill="none" stroke="black" points="349.5,-178 349.5,-201 481.5,-201 481.5,-178 349.5,-178"/>
-<text text-anchor="start" x="353.5" y="-185.8" font-family="arial" font-size="14.00">0.25 mm² (24 AWG)</text>
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-<text text-anchor="start" x="485.5" y="-185.8" font-family="arial" font-size="14.00">+ S</text>
-<polygon fill="none" stroke="black" points="511.5,-178 511.5,-201 543.5,-201 543.5,-178 511.5,-178"/>
-<text text-anchor="start" x="515.5" y="-185.8" font-family="arial" font-size="14.00">1 m</text>
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-<text text-anchor="start" x="423" y="-145.8" font-family="arial" font-size="14.00">WH</text>
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-<polygon fill="#000000" stroke="transparent" points="326.5,-138 326.5,-140 543.5,-140 543.5,-138 326.5,-138"/>
-<polygon fill="#ffffff" stroke="transparent" points="326.5,-136 326.5,-138 543.5,-138 543.5,-136 326.5,-136"/>
-<polygon fill="#000000" stroke="transparent" points="326.5,-134 326.5,-136 543.5,-136 543.5,-134 326.5,-134"/>
-<text text-anchor="start" x="347" y="-120.8" font-family="arial" font-size="14.00">X1:2</text>
-<text text-anchor="start" x="425.5" y="-120.8" font-family="arial" font-size="14.00">BN</text>
-<text text-anchor="start" x="495" y="-120.8" font-family="arial" font-size="14.00">X2:2</text>
-<polygon fill="#000000" stroke="transparent" points="326.5,-113 326.5,-115 543.5,-115 543.5,-113 326.5,-113"/>
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-<polygon fill="#000000" stroke="transparent" points="326.5,-109 326.5,-111 543.5,-111 543.5,-109 326.5,-109"/>
-<text text-anchor="start" x="347" y="-95.8" font-family="arial" font-size="14.00">X1:3</text>
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-<polygon fill="#00ff00" stroke="transparent" points="326.5,-86 326.5,-88 543.5,-88 543.5,-86 326.5,-86"/>
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-<text text-anchor="start" x="416" y="-26.8" font-family="arial" font-size="14.00">Shield</text>
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-<text text-anchor="start" x="359" y="-5.8" font-family="arial" font-size="14.00"> </text>
+<polygon fill="#ffffff" stroke="black" points="548,-224 331,-224 331,0 548,0 548,-224"/>
+<polygon fill="none" stroke="black" points="331.5,-201 331.5,-224 548.5,-224 548.5,-201 331.5,-201"/>
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+<polygon fill="none" stroke="black" points="331.5,-178 331.5,-201 354.5,-201 354.5,-178 331.5,-178"/>
+<text text-anchor="start" x="335.5" y="-185.8" font-family="arial" font-size="14.00">4x</text>
+<polygon fill="none" stroke="black" points="354.5,-178 354.5,-201 486.5,-201 486.5,-178 354.5,-178"/>
+<text text-anchor="start" x="358.5" y="-185.8" font-family="arial" font-size="14.00">0.25 mm² (24 AWG)</text>
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+<text text-anchor="start" x="364.5" y="-164.8" font-family="arial" font-size="14.00"> </text>
+<text text-anchor="start" x="334.5" y="-145.8" font-family="arial" font-size="14.00">X1:1:GND</text>
+<text text-anchor="start" x="404.5" y="-145.8" font-family="arial" font-size="14.00"> &#160;&#160;&#160;&#160;1:WH &#160;&#160;&#160;</text>
+<text text-anchor="start" x="481.5" y="-145.8" font-family="arial" font-size="14.00">X2:1:GND</text>
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+<polygon fill="#ffffff" stroke="transparent" points="331.5,-136 331.5,-138 548.5,-138 548.5,-136 331.5,-136"/>
+<polygon fill="#000000" stroke="transparent" points="331.5,-134 331.5,-136 548.5,-136 548.5,-134 331.5,-134"/>
+<text text-anchor="start" x="335" y="-120.8" font-family="arial" font-size="14.00">X1:2:VCC</text>
+<text text-anchor="start" x="406.5" y="-120.8" font-family="arial" font-size="14.00"> &#160;&#160;&#160;&#160;2:BN &#160;&#160;&#160;</text>
+<text text-anchor="start" x="482" y="-120.8" font-family="arial" font-size="14.00">X2:2:VCC</text>
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+<text text-anchor="start" x="340" y="-95.8" font-family="arial" font-size="14.00">X1:3:RX</text>
+<text text-anchor="start" x="406" y="-95.8" font-family="arial" font-size="14.00"> &#160;&#160;&#160;&#160;3:GN &#160;&#160;&#160;</text>
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+<text text-anchor="start" x="341" y="-70.8" font-family="arial" font-size="14.00">X1:4:TX</text>
+<text text-anchor="start" x="407" y="-70.8" font-family="arial" font-size="14.00"> &#160;&#160;&#160;&#160;4:YE &#160;&#160;&#160;</text>
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+<text text-anchor="start" x="364.5" y="-45.8" font-family="arial" font-size="14.00"> </text>
+<text text-anchor="start" x="334.5" y="-26.8" font-family="arial" font-size="14.00">X1:1:GND</text>
+<text text-anchor="start" x="420.5" y="-26.8" font-family="arial" font-size="14.00">Shield</text>
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+<text text-anchor="start" x="364.5" y="-5.8" font-family="arial" font-size="14.00"> </text>
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+<polygon fill="#ffffff" stroke="transparent" points="331.5,-136 331.5,-138 548.5,-138 548.5,-136 331.5,-136"/>
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diff --git a/tutorial/tutorial04.bom.tsv b/tutorial/tutorial04.bom.tsv
index 92f70f84..e2c3835d 100644
--- a/tutorial/tutorial04.bom.tsv
+++ b/tutorial/tutorial04.bom.tsv
@@ -1,4 +1,4 @@
-Item	Qty	Unit	Designators
-Connector, Molex KK 254, female, 4 pins	2		X2, X3
-Connector, Molex KK 254, male, 4 pins	1		X1
-Cable, 4 x 24 AWG	0.4	m	W1, W2
+Id	Description	Qty	Unit	Designators
+1	Cable, 4 x 24 AWG	0.4	m	W1, W2
+2	Connector, Molex KK 254, female, 4 pins	2		X2, X3
+3	Connector, Molex KK 254, male, 4 pins	1		X1
diff --git a/tutorial/tutorial04.gv b/tutorial/tutorial04.gv
index e2a63f33..2df4930b 100644
--- a/tutorial/tutorial04.gv
+++ b/tutorial/tutorial04.gv
@@ -1,8 +1,8 @@
 graph {
-// Graph generated by WireViz 0.2
+// Graph generated by WireViz 0.3
 // https://github.com/formatc1702/WireViz
-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
+	node [fillcolor="#FFFFFF" fontname=arial height=0 margin=0 shape=none style=filled width=0]
 	edge [fontname=arial style=bold]
 	X1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
@@ -44,7 +44,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X2 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -89,7 +89,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X3 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -130,7 +130,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#895956:#000000"]
 	X1:p1r:e -- W1:w1:w
 	W1:w1:e -- X2:p1l:w
@@ -161,9 +161,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:1</td>
-    <td>BN</td>
-    <td>X2:1</td>
+    <td>X1:1:GND</td>
+    <td>
+     1:BN
+    </td>
+    <td>X2:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -175,9 +177,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:2</td>
-    <td>RD</td>
-    <td>X2:2</td>
+    <td>X1:2:VCC</td>
+    <td>
+     2:RD
+    </td>
+    <td>X2:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -189,9 +193,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:3</td>
-    <td>OG</td>
-    <td>X2:3</td>
+    <td>X1:3:SCL</td>
+    <td>
+     3:OG
+    </td>
+    <td>X2:3:SCL</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w3" height="6">
@@ -203,9 +209,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X1:4</td>
-    <td>YE</td>
-    <td>X2:4</td>
+    <td>X1:4:SDA</td>
+    <td>
+     4:YE
+    </td>
+    <td>X2:4:SDA</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w4" height="6">
@@ -225,7 +233,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style=""]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#895956:#000000"]
 	X2:p1r:e -- W2:w1:w
 	W2:w1:e -- X3:p1l:w
@@ -256,9 +264,11 @@ graph {
   <table border="0" cellspacing="0" cellborder="0">
    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X2:1</td>
-    <td>BN</td>
-    <td>X3:1</td>
+    <td>X2:1:GND</td>
+    <td>
+     1:BN
+    </td>
+    <td>X3:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -270,9 +280,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X2:2</td>
-    <td>RD</td>
-    <td>X3:2</td>
+    <td>X2:2:VCC</td>
+    <td>
+     2:RD
+    </td>
+    <td>X3:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -284,9 +296,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X2:3</td>
-    <td>OG</td>
-    <td>X3:3</td>
+    <td>X2:3:SCL</td>
+    <td>
+     3:OG
+    </td>
+    <td>X3:3:SCL</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w3" height="6">
@@ -298,9 +312,11 @@ graph {
     </td>
    </tr>
    <tr>
-    <td>X2:4</td>
-    <td>YE</td>
-    <td>X3:4</td>
+    <td>X2:4:SDA</td>
+    <td>
+     4:YE
+    </td>
+    <td>X3:4:SDA</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w4" height="6">
@@ -320,5 +336,5 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style=""]
+> fillcolor="#FFFFFF" shape=box style=filled]
 }
diff --git a/tutorial/tutorial04.html b/tutorial/tutorial04.html
index 74dc9443..c11befc0 100644
--- a/tutorial/tutorial04.html
+++ b/tutorial/tutorial04.html
@@ -1,312 +1,345 @@
 <!DOCTYPE html>
 <html lang="en"><head>
  <meta charset="UTF-8">
- <meta name="generator" content="WireViz 0.2 - https://github.com/formatc1702/WireViz">
- <title>WireViz Diagram and BOM</title>
-</head><body style="font-family:Arial">
-<h1>Diagram</h1><!-- XML and DOCTYPE declarations from SVG file removed -->
-<!-- Generated by graphviz version 2.44.1 (20200629.0846)
+ <meta name="generator" content="WireViz 0.3 - https://github.com/formatc1702/WireViz">
+ <title>tutorial04</title>
+</head><body style="font-family:arial;background-color:#FFFFFF">
+<h1>tutorial04</h1>
+<h2>Diagram</h2>
+<!-- XML and DOCTYPE declarations from SVG file removed -->
+<!-- Generated by graphviz version 2.49.0 (20210828.1703)
  -->
 <!-- Pages: 1 -->
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- viewBox="0.00 0.00 1432.00 215.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<svg width="1551pt" height="215pt"
+ viewBox="0.00 0.00 1551.00 215.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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-<polygon fill="white" stroke="transparent" points="-4,4 -4,-211 1428,-211 1428,4 -4,4"/>
+<polygon fill="#ffffff" stroke="transparent" points="-4,4 -4,-211 1547,-211 1547,4 -4,4"/>
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 <title>X1</title>
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-<text text-anchor="start" x="77.5" y="-159.3" font-family="arial" font-size="14.00">X1</text>
-<polygon fill="none" stroke="black" points="0.5,-128.5 0.5,-151.5 93.5,-151.5 93.5,-128.5 0.5,-128.5"/>
+<polygon fill="#ffffff" stroke="black" points="175,-175 0,-175 0,-14 175,-14 175,-175"/>
+<polygon fill="none" stroke="black" points="0.5,-151.5 0.5,-174.5 175.5,-174.5 175.5,-151.5 0.5,-151.5"/>
+<text text-anchor="start" x="79" y="-159.3" font-family="arial" font-size="14.00">X1</text>
+<polygon fill="none" stroke="black" points="0.5,-128.5 0.5,-151.5 96.5,-151.5 96.5,-128.5 0.5,-128.5"/>
 <text text-anchor="start" x="4.5" y="-136.3" font-family="arial" font-size="14.00">Molex KK 254</text>
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-<text text-anchor="start" x="97.5" y="-136.3" font-family="arial" font-size="14.00">male</text>
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-<text text-anchor="start" x="130.5" y="-113.3" font-family="arial" font-size="14.00">1</text>
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-<text text-anchor="start" x="34.5" y="-90.3" font-family="arial" font-size="14.00">VCC</text>
-<polygon fill="none" stroke="black" points="97.5,-82.5 97.5,-105.5 171.5,-105.5 171.5,-82.5 97.5,-82.5"/>
-<text text-anchor="start" x="130.5" y="-90.3" font-family="arial" font-size="14.00">2</text>
-<polygon fill="none" stroke="black" points="0.5,-59.5 0.5,-82.5 97.5,-82.5 97.5,-59.5 0.5,-59.5"/>
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-<polygon fill="none" stroke="black" points="97.5,-59.5 97.5,-82.5 171.5,-82.5 171.5,-59.5 97.5,-59.5"/>
-<text text-anchor="start" x="130.5" y="-67.3" font-family="arial" font-size="14.00">3</text>
-<polygon fill="none" stroke="black" points="0.5,-36.5 0.5,-59.5 97.5,-59.5 97.5,-36.5 0.5,-36.5"/>
-<text text-anchor="start" x="35" y="-44.3" font-family="arial" font-size="14.00">SDA</text>
-<polygon fill="none" stroke="black" points="97.5,-36.5 97.5,-59.5 171.5,-59.5 171.5,-36.5 97.5,-36.5"/>
-<text text-anchor="start" x="130.5" y="-44.3" font-family="arial" font-size="14.00">4</text>
-<polygon fill="none" stroke="black" points="0.5,-13.5 0.5,-36.5 171.5,-36.5 171.5,-13.5 0.5,-13.5"/>
-<text text-anchor="start" x="33.5" y="-21.3" font-family="arial" font-size="14.00">to microcontroller</text>
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+<text text-anchor="start" x="100.5" y="-136.3" font-family="arial" font-size="14.00">male</text>
+<polygon fill="none" stroke="black" points="135.5,-128.5 135.5,-151.5 175.5,-151.5 175.5,-128.5 135.5,-128.5"/>
+<text text-anchor="start" x="139.5" y="-136.3" font-family="arial" font-size="14.00">4&#45;pin</text>
+<polygon fill="none" stroke="black" points="0.5,-105.5 0.5,-128.5 100.5,-128.5 100.5,-105.5 0.5,-105.5"/>
+<text text-anchor="start" x="34.5" y="-113.3" font-family="arial" font-size="14.00">GND</text>
+<polygon fill="none" stroke="black" points="100.5,-105.5 100.5,-128.5 175.5,-128.5 175.5,-105.5 100.5,-105.5"/>
+<text text-anchor="start" x="134" y="-113.3" font-family="arial" font-size="14.00">1</text>
+<polygon fill="none" stroke="black" points="0.5,-82.5 0.5,-105.5 100.5,-105.5 100.5,-82.5 0.5,-82.5"/>
+<text text-anchor="start" x="35.5" y="-90.3" font-family="arial" font-size="14.00">VCC</text>
+<polygon fill="none" stroke="black" points="100.5,-82.5 100.5,-105.5 175.5,-105.5 175.5,-82.5 100.5,-82.5"/>
+<text text-anchor="start" x="134" y="-90.3" font-family="arial" font-size="14.00">2</text>
+<polygon fill="none" stroke="black" points="0.5,-59.5 0.5,-82.5 100.5,-82.5 100.5,-59.5 0.5,-59.5"/>
+<text text-anchor="start" x="36.5" y="-67.3" font-family="arial" font-size="14.00">SCL</text>
+<polygon fill="none" stroke="black" points="100.5,-59.5 100.5,-82.5 175.5,-82.5 175.5,-59.5 100.5,-59.5"/>
+<text text-anchor="start" x="134" y="-67.3" font-family="arial" font-size="14.00">3</text>
+<polygon fill="none" stroke="black" points="0.5,-36.5 0.5,-59.5 100.5,-59.5 100.5,-36.5 0.5,-36.5"/>
+<text text-anchor="start" x="36" y="-44.3" font-family="arial" font-size="14.00">SDA</text>
+<polygon fill="none" stroke="black" points="100.5,-36.5 100.5,-59.5 175.5,-59.5 175.5,-36.5 100.5,-36.5"/>
+<text text-anchor="start" x="134" y="-44.3" font-family="arial" font-size="14.00">4</text>
+<polygon fill="none" stroke="black" points="0.5,-13.5 0.5,-36.5 175.5,-36.5 175.5,-13.5 0.5,-13.5"/>
+<text text-anchor="start" x="34" y="-21.3" font-family="arial" font-size="14.00">to microcontroller</text>
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 <!-- W1 -->
 <g id="node4" class="node">
 <title>W1</title>
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-<polygon fill="none" stroke="black" points="315,-183.5 315,-206.5 469,-206.5 469,-183.5 315,-183.5"/>
-<text text-anchor="start" x="381" y="-191.3" font-family="arial" font-size="14.00">W1</text>
-<polygon fill="none" stroke="black" points="315,-160.5 315,-183.5 348,-183.5 348,-160.5 315,-160.5"/>
-<text text-anchor="start" x="324" y="-168.3" font-family="arial" font-size="14.00">4x</text>
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-<text text-anchor="start" x="356.5" y="-168.3" font-family="arial" font-size="14.00">24 AWG</text>
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-<text text-anchor="start" x="425.5" y="-168.3" font-family="arial" font-size="14.00">0.3 m</text>
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-<text text-anchor="start" x="382.5" y="-128.3" font-family="arial" font-size="14.00">BN</text>
-<text text-anchor="start" x="428.5" y="-128.3" font-family="arial" font-size="14.00">X2:1</text>
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-<polygon fill="#000000" stroke="transparent" points="315,-41.5 315,-43.5 469,-43.5 469,-41.5 315,-41.5"/>
-<text text-anchor="start" x="339.5" y="-28.3" font-family="arial" font-size="14.00"> </text>
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-<text text-anchor="start" x="319" y="-7.3" font-family="arial" font-size="14.00">This cable is a bit longer</text>
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+<polygon fill="none" stroke="black" points="319.5,-183.5 319.5,-206.5 528.5,-206.5 528.5,-183.5 319.5,-183.5"/>
+<text text-anchor="start" x="413.5" y="-191.3" font-family="arial" font-size="14.00">W1</text>
+<polygon fill="none" stroke="black" points="319.5,-160.5 319.5,-183.5 370.5,-183.5 370.5,-160.5 319.5,-160.5"/>
+<text text-anchor="start" x="337.5" y="-168.3" font-family="arial" font-size="14.00">4x</text>
+<polygon fill="none" stroke="black" points="370.5,-160.5 370.5,-183.5 457.5,-183.5 457.5,-160.5 370.5,-160.5"/>
+<text text-anchor="start" x="388" y="-168.3" font-family="arial" font-size="14.00">24 AWG</text>
+<polygon fill="none" stroke="black" points="457.5,-160.5 457.5,-183.5 528.5,-183.5 528.5,-160.5 457.5,-160.5"/>
+<text text-anchor="start" x="475" y="-168.3" font-family="arial" font-size="14.00">0.3 m</text>
+<text text-anchor="start" x="351.5" y="-147.3" font-family="arial" font-size="14.00"> </text>
+<text text-anchor="start" x="321.5" y="-128.3" font-family="arial" font-size="14.00">X1:1:GND</text>
+<text text-anchor="start" x="390.5" y="-128.3" font-family="arial" font-size="14.00"> &#160;&#160;&#160;&#160;1:BN &#160;&#160;&#160;</text>
+<text text-anchor="start" x="462.5" y="-128.3" font-family="arial" font-size="14.00">X2:1:GND</text>
+<polygon fill="#000000" stroke="transparent" points="319.5,-120.5 319.5,-122.5 528.5,-122.5 528.5,-120.5 319.5,-120.5"/>
+<polygon fill="#895956" stroke="transparent" points="319.5,-118.5 319.5,-120.5 528.5,-120.5 528.5,-118.5 319.5,-118.5"/>
+<polygon fill="#000000" stroke="transparent" points="319.5,-116.5 319.5,-118.5 528.5,-118.5 528.5,-116.5 319.5,-116.5"/>
+<text text-anchor="start" x="322" y="-103.3" font-family="arial" font-size="14.00">X1:2:VCC</text>
+<text text-anchor="start" x="390.5" y="-103.3" font-family="arial" font-size="14.00"> &#160;&#160;&#160;&#160;2:RD &#160;&#160;&#160;</text>
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\ No newline at end of file
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+  <td style="border:1px solid #000000; padding: 4px">W1, W2</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">2</td>
+  <td style="border:1px solid #000000; padding: 4px">Connector, Molex KK 254, female, 4 pins</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">2</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px">X2, X3</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">3</td>
+  <td style="border:1px solid #000000; padding: 4px">Connector, Molex KK 254, male, 4 pins</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">1</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px">X1</td>
+ </tr>
+</table>
+</body></html>
diff --git a/tutorial/tutorial04.png b/tutorial/tutorial04.png
index d48e2ba6..acb3e833 100644
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+<path fill="none" stroke="#000000" stroke-width="2" d="M175,-91.5C239.13,-91.5 255.12,-92.5 319,-92.5"/>
+<path fill="none" stroke="#ff0000" stroke-width="2" d="M175,-93.5C239,-93.5 255,-94.5 319,-94.5"/>
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+<path fill="none" stroke="#000000" stroke-width="2" d="M175,-72.5C239.13,-72.5 255.12,-71.5 319,-71.5"/>
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 <title>X1:e&#45;&#45;W1:w</title>
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+<text text-anchor="start" x="828.5" y="-44.3" font-family="arial" font-size="14.00">4</text>
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 <g id="node5" class="node">
 <title>W2</title>
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+<polygon fill="none" stroke="black" points="1054.5,-160.5 1054.5,-183.5 1141.5,-183.5 1141.5,-160.5 1054.5,-160.5"/>
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+<text text-anchor="start" x="1035.5" y="-147.3" font-family="arial" font-size="14.00"> </text>
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+<polygon fill="#895956" stroke="transparent" points="1003.5,-118.5 1003.5,-120.5 1212.5,-120.5 1212.5,-118.5 1003.5,-118.5"/>
+<polygon fill="#000000" stroke="transparent" points="1003.5,-116.5 1003.5,-118.5 1212.5,-118.5 1212.5,-116.5 1003.5,-116.5"/>
+<text text-anchor="start" x="1006" y="-103.3" font-family="arial" font-size="14.00">X2:2:VCC</text>
+<text text-anchor="start" x="1074.5" y="-103.3" font-family="arial" font-size="14.00"> &#160;&#160;&#160;&#160;2:RD &#160;&#160;&#160;</text>
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+<polygon fill="#000000" stroke="transparent" points="1003.5,-95.5 1003.5,-97.5 1212.5,-97.5 1212.5,-95.5 1003.5,-95.5"/>
+<polygon fill="#ff0000" stroke="transparent" points="1003.5,-93.5 1003.5,-95.5 1212.5,-95.5 1212.5,-93.5 1003.5,-93.5"/>
+<polygon fill="#000000" stroke="transparent" points="1003.5,-91.5 1003.5,-93.5 1212.5,-93.5 1212.5,-91.5 1003.5,-91.5"/>
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+<polygon fill="#ff8000" stroke="transparent" points="1003.5,-68.5 1003.5,-70.5 1212.5,-70.5 1212.5,-68.5 1003.5,-68.5"/>
+<polygon fill="#000000" stroke="transparent" points="1003.5,-66.5 1003.5,-68.5 1212.5,-68.5 1212.5,-66.5 1003.5,-66.5"/>
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+<polygon fill="none" stroke="black" points="1003.5,0.5 1003.5,-22.5 1212.5,-22.5 1212.5,0.5 1003.5,0.5"/>
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diff --git a/tutorial/tutorial05.bom.tsv b/tutorial/tutorial05.bom.tsv
index d7f405d6..607f55b5 100644
--- a/tutorial/tutorial05.bom.tsv
+++ b/tutorial/tutorial05.bom.tsv
@@ -1,6 +1,6 @@
-Item	Qty	Unit	Designators
-Connector, Crimp ferrule, 0.5 mm², OG	4		
-Connector, Molex 8981, female, 4 pins	1		X1
-Wire, 0.5 mm², BK	0.6	m	W1
-Wire, 0.5 mm², RD	0.3	m	W1
-Wire, 0.5 mm², YE	0.3	m	W1
+Id	Description	Qty	Unit	Designators
+1	Connector, Crimp ferrule, 0.5 mm², OG	4		
+2	Connector, Molex 8981, female, 4 pins	1		X1
+3	Wire, 0.5 mm², BK	0.6	m	W1
+4	Wire, 0.5 mm², RD	0.3	m	W1
+5	Wire, 0.5 mm², YE	0.3	m	W1
diff --git a/tutorial/tutorial05.gv b/tutorial/tutorial05.gv
index 92ad8df0..80c9f44e 100644
--- a/tutorial/tutorial05.gv
+++ b/tutorial/tutorial05.gv
@@ -1,8 +1,8 @@
 graph {
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+// Graph generated by WireViz 0.3
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-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
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  </td></tr>
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+> fillcolor="#FFFFFF" shape=box style=filled]
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+> fillcolor="#FFFFFF" shape=box style=filled]
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+> fillcolor="#FFFFFF" shape=box style=filled]
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    <tr>
     <td></td>
-    <td>YE</td>
-    <td>X1:1</td>
+    <td>
+     YE
+    </td>
+    <td>X1:1:+12V</td>
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    <tr>
     <td></td>
-    <td>BK</td>
-    <td>X1:2</td>
+    <td>
+     BK
+    </td>
+    <td>X1:2:GND</td>
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-    <td>X1:3</td>
+    <td>
+     BK
+    </td>
+    <td>X1:3:GND</td>
    </tr>
    <tr>
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@@ -161,8 +167,10 @@ graph {
    </tr>
    <tr>
     <td></td>
-    <td>RD</td>
-    <td>X1:4</td>
+    <td>
+     RD
+    </td>
+    <td>X1:4:+5V</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w4" height="6">
@@ -177,5 +185,5 @@ graph {
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  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style="filled,dashed"]
+> fillcolor="#FFFFFF" shape=box style="filled,dashed"]
 }
diff --git a/tutorial/tutorial05.html b/tutorial/tutorial05.html
index 6dfed4e1..32691f59 100644
--- a/tutorial/tutorial05.html
+++ b/tutorial/tutorial05.html
@@ -1,189 +1,236 @@
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diff --git a/tutorial/tutorial06.bom.tsv b/tutorial/tutorial06.bom.tsv
index 04ff66cc..b86b323c 100644
--- a/tutorial/tutorial06.bom.tsv
+++ b/tutorial/tutorial06.bom.tsv
@@ -1,7 +1,7 @@
-Item	Qty	Unit	Designators
-Connector, Crimp ferrule, 0.5 mm², OG	2		
-Connector, Crimp ferrule, 1.0 mm², YE	1		
-Connector, Molex 8981, female, 4 pins	1		X1
-Wire, 0.5 mm², BK	0.6	m	W1
-Wire, 0.5 mm², RD	0.3	m	W1
-Wire, 0.5 mm², YE	0.3	m	W1
+Id	Description	Qty	Unit	Designators
+1	Connector, Crimp ferrule, 0.5 mm², OG	2		
+2	Connector, Crimp ferrule, 1.0 mm², YE	1		
+3	Connector, Molex 8981, female, 4 pins	1		X1
+4	Wire, 0.5 mm², BK	0.6	m	W1
+5	Wire, 0.5 mm², RD	0.3	m	W1
+6	Wire, 0.5 mm², YE	0.3	m	W1
diff --git a/tutorial/tutorial06.gv b/tutorial/tutorial06.gv
index 028ebe5c..181ce588 100644
--- a/tutorial/tutorial06.gv
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@@ -1,8 +1,8 @@
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+// Graph generated by WireViz 0.3
 // https://github.com/formatc1702/WireViz
-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
+	node [fillcolor="#FFFFFF" fontname=arial height=0 margin=0 shape=none style=filled width=0]
 	edge [fontname=arial style=bold]
 	X1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
@@ -39,7 +39,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	F_10 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -51,7 +51,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	_F_05_1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -63,7 +63,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	_F_05_2 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -75,7 +75,7 @@ graph {
   </tr></table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#ffff00:#000000"]
 	_F_05_1:e -- W1:w1:w
 	W1:w1:e -- X1:p1l:w
@@ -107,8 +107,10 @@ graph {
    <tr><td>&nbsp;</td></tr>
    <tr>
     <td></td>
-    <td>YE</td>
-    <td>X1:1</td>
+    <td>
+     YE
+    </td>
+    <td>X1:1:+12V</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
@@ -121,8 +123,10 @@ graph {
    </tr>
    <tr>
     <td></td>
-    <td>BK</td>
-    <td>X1:2</td>
+    <td>
+     BK
+    </td>
+    <td>X1:2:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
@@ -135,8 +139,10 @@ graph {
    </tr>
    <tr>
     <td></td>
-    <td>BK</td>
-    <td>X1:3</td>
+    <td>
+     BK
+    </td>
+    <td>X1:3:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w3" height="6">
@@ -149,8 +155,10 @@ graph {
    </tr>
    <tr>
     <td></td>
-    <td>RD</td>
-    <td>X1:4</td>
+    <td>
+     RD
+    </td>
+    <td>X1:4:+5V</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w4" height="6">
@@ -165,5 +173,5 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style="filled,dashed"]
+> fillcolor="#FFFFFF" shape=box style="filled,dashed"]
 }
diff --git a/tutorial/tutorial06.html b/tutorial/tutorial06.html
index 583e90df..5900ad17 100644
--- a/tutorial/tutorial06.html
+++ b/tutorial/tutorial06.html
@@ -1,176 +1,230 @@
 <!DOCTYPE html>
 <html lang="en"><head>
  <meta charset="UTF-8">
- <meta name="generator" content="WireViz 0.2 - https://github.com/formatc1702/WireViz">
- <title>WireViz Diagram and BOM</title>
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-<h1>Diagram</h1><!-- XML and DOCTYPE declarations from SVG file removed -->
-<!-- Generated by graphviz version 2.44.1 (20200629.0846)
+ <meta name="generator" content="WireViz 0.3 - https://github.com/formatc1702/WireViz">
+ <title>tutorial06</title>
+</head><body style="font-family:arial;background-color:#FFFFFF">
+<h1>tutorial06</h1>
+<h2>Diagram</h2>
+<!-- XML and DOCTYPE declarations from SVG file removed -->
+<!-- Generated by graphviz version 2.49.0 (20210828.1703)
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- viewBox="0.00 0.00 776.00 210.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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-<polygon fill="white" stroke="transparent" points="-4,4 -4,-206 772,-206 772,4 -4,4"/>
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+ viewBox="0.00 0.00 793.00 192.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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+<polygon fill="#ffffff" stroke="transparent" points="-4,4 -4,-188 789,-188 789,4 -4,4"/>
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 <title>X1</title>
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-<text text-anchor="start" x="703.5" y="-108.8" font-family="arial" font-size="14.00">+12V</text>
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+<polygon fill="none" stroke="black" points="613,-129 613,-152 785,-152 785,-129 613,-129"/>
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+<polygon fill="none" stroke="black" points="694,-106 694,-129 745,-129 745,-106 694,-106"/>
+<text text-anchor="start" x="698" y="-113.8" font-family="arial" font-size="14.00">female</text>
+<polygon fill="none" stroke="black" points="745,-106 745,-129 785,-129 785,-106 745,-106"/>
+<text text-anchor="start" x="749" y="-113.8" font-family="arial" font-size="14.00">4&#45;pin</text>
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+<text text-anchor="start" x="718.5" y="-90.8" font-family="arial" font-size="14.00">+12V</text>
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+<text text-anchor="start" x="719.5" y="-67.8" font-family="arial" font-size="14.00">GND</text>
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+<polygon fill="none" stroke="black" points="613,-14 613,-37 686,-37 686,-14 613,-14"/>
+<text text-anchor="start" x="645.5" y="-21.8" font-family="arial" font-size="14.00">4</text>
+<polygon fill="none" stroke="black" points="686,-14 686,-37 785,-37 785,-14 686,-14"/>
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+<text text-anchor="start" x="5.5" y="-55.8" font-family="arial" font-size="14.00">Crimp ferrule</text>
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+<text text-anchor="start" x="94.5" y="-55.8" font-family="arial" font-size="14.00">1.0 mm²</text>
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+<text text-anchor="start" x="154.5" y="-55.8" font-family="arial" font-size="14.00">YE</text>
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+<polygon fill="none" stroke="black" points="177.5,-48 177.5,-71 185.5,-71 185.5,-48 177.5,-48"/>
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+<polygon fill="none" stroke="black" points="331,-161 331,-184 469,-184 469,-161 331,-161"/>
+<text text-anchor="start" x="389.5" y="-168.8" font-family="arial" font-size="14.00">W1</text>
+<polygon fill="none" stroke="black" points="331,-138 331,-161 358,-161 358,-138 331,-138"/>
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+<polygon fill="none" stroke="black" points="358,-138 358,-161 422,-161 422,-138 358,-138"/>
+<text text-anchor="start" x="364" y="-145.8" font-family="arial" font-size="14.00">0.5 mm²</text>
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diff --git a/tutorial/tutorial06.png b/tutorial/tutorial06.png
index 8f56fb77..b131f09e 100644
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diff --git a/tutorial/tutorial07.bom.tsv b/tutorial/tutorial07.bom.tsv
index 7885f329..0c3d0dd2 100644
--- a/tutorial/tutorial07.bom.tsv
+++ b/tutorial/tutorial07.bom.tsv
@@ -1,6 +1,6 @@
-Item	Qty	Unit	Designators
-Connector, Molex KK 254, female, 4 pins	6		X1, X2, X3, X4, X5, X6
-Wire, 0.25 mm², PK	1.0	m	W1, W2, W3, W4, W5
-Wire, 0.25 mm², TQ	1.0	m	W1, W2, W3, W4, W5
-Wire, 0.25 mm², VT	1.0	m	W1, W2, W3, W4, W5
-Wire, 0.25 mm², YE	1.0	m	W1, W2, W3, W4, W5
+Id	Description	Qty	Unit	Designators
+1	Connector, Molex KK 254, female, 4 pins	6		X1, X2, X3, X4, X5, X6
+2	Wire, 0.25 mm², PK	1.0	m	W1, W2, W3, W4, W5
+3	Wire, 0.25 mm², TQ	1.0	m	W1, W2, W3, W4, W5
+4	Wire, 0.25 mm², VT	1.0	m	W1, W2, W3, W4, W5
+5	Wire, 0.25 mm², YE	1.0	m	W1, W2, W3, W4, W5
diff --git a/tutorial/tutorial07.gv b/tutorial/tutorial07.gv
index 2ec7ec0c..6feeab6e 100644
--- a/tutorial/tutorial07.gv
+++ b/tutorial/tutorial07.gv
@@ -1,8 +1,8 @@
 graph {
-// Graph generated by WireViz 0.2
+// Graph generated by WireViz 0.3
 // https://github.com/formatc1702/WireViz
-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
+	node [fillcolor="#FFFFFF" fontname=arial height=0 margin=0 shape=none style=filled width=0]
 	edge [fontname=arial style=bold]
 	X1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
@@ -39,7 +39,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
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 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -75,7 +75,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
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 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
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 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
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  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
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 <table border="0" cellspacing="0" cellpadding="0">
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   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
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  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#00ffff:#000000"]
 	X1:p1r:e -- W1:w1:w
 	W1:w1:e -- X2:p1l:w
@@ -250,9 +250,11 @@ graph {
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    <tr><td>&nbsp;</td></tr>
    <tr>
-    <td>X1:1</td>
-    <td>TQ</td>
-    <td>X2:1</td>
+    <td>X1:1:GND</td>
+    <td>
+     TQ
+    </td>
+    <td>X2:1:GND</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w1" height="6">
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     </td>
    </tr>
    <tr>
-    <td>X1:2</td>
-    <td>PK</td>
-    <td>X2:2</td>
+    <td>X1:2:VCC</td>
+    <td>
+     PK
+    </td>
+    <td>X2:2:VCC</td>
    </tr>
    <tr>
     <td colspan="3" border="0" cellspacing="0" cellpadding="0" port="w2" height="6">
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     </td>
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    <tr>
-    <td>X1:3</td>
-    <td>YE</td>
-    <td>X2:3</td>
+    <td>X1:3:SCL</td>
+    <td>
+     YE
+    </td>
+    <td>X2:3:SCL</td>
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    <tr>
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-    <td>VT</td>
-    <td>X2:4</td>
+    <td>X1:4:SDA</td>
+    <td>
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+    <td>X2:4:SDA</td>
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-    <td>TQ</td>
-    <td>X2:1</td>
+    <td>X3:1:GND</td>
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-    <td>PK</td>
-    <td>X2:2</td>
+    <td>X3:2:VCC</td>
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+    <td>X2:2:VCC</td>
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-    <td>YE</td>
-    <td>X2:3</td>
+    <td>X3:3:SCL</td>
+    <td>
+     YE
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-    <td>VT</td>
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+    <td>X3:4:SDA</td>
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-    <td>X4:1</td>
+    <td>X3:1:GND</td>
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-    <td>X4:2</td>
+    <td>X3:2:VCC</td>
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+    <td>X4:2:VCC</td>
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-    <td>X4:3</td>
+    <td>X3:3:SCL</td>
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+    <td>X3:4:SDA</td>
+    <td>
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-    <td>X4:1</td>
+    <td>X5:1:GND</td>
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+    <td>X5:3:SCL</td>
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-    <td>X4:4</td>
+    <td>X5:4:SDA</td>
+    <td>
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-    <td>X5:1</td>
-    <td>TQ</td>
-    <td>X6:1</td>
+    <td>X5:1:GND</td>
+    <td>
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+    <td>X6:1:GND</td>
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-    <td>PK</td>
-    <td>X6:2</td>
+    <td>X5:2:VCC</td>
+    <td>
+     PK
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+    <td>X6:2:VCC</td>
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-    <td>YE</td>
-    <td>X6:3</td>
+    <td>X5:3:SCL</td>
+    <td>
+     YE
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+    <td>X6:3:SCL</td>
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-    <td>VT</td>
-    <td>X6:4</td>
+    <td>X5:4:SDA</td>
+    <td>
+     VT
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+    <td>X6:4:SDA</td>
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diff --git a/tutorial/tutorial07.html b/tutorial/tutorial07.html
index 12d87418..c1b952a8 100644
--- a/tutorial/tutorial07.html
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+<polygon fill="#00ffff" stroke="transparent" points="331.5,-304 331.5,-306 526.5,-306 526.5,-304 331.5,-304"/>
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diff --git a/tutorial/tutorial08.bom.tsv b/tutorial/tutorial08.bom.tsv
index 441f10bb..d425c969 100644
--- a/tutorial/tutorial08.bom.tsv
+++ b/tutorial/tutorial08.bom.tsv
@@ -1,8 +1,11 @@
-Item	Qty	Unit	Designators	P/N	Manufacturer	MPN
-Connector, Molex KK 254, female, 4 pins	2		X1, X3		Molex	22013047
-Connector, Molex KK 254, female, 4 pins	1		X2	CON4	Molex	22013047
-Cable, 4 x 0.25 mm²	1	m	W1	CAB1	CablesCo	ABC123
-Wire, 0.25 mm², BK	2	m	W2	WIRE2	WiresCo	W1-BK
-Wire, 0.25 mm², RD	1	m	W2	WIRE3	WiresCo	W1-RD
-Wire, 0.25 mm², YE	1	m	W2	WIRE1	WiresCo	W1-YE
-Label, pinout information	2		X2, X3	Label-ID-1	generic company	Label1
+Id	Description	Qty	Unit	Designators	P/N	Manufacturer	MPN	Supplier	SPN
+1	Cable, 4 x 0.25 mm²	1	m	W1	CAB1	CablesCo	ABC123	Cables R Us	999-888-777
+2	Connector, Molex KK 254, female, 4 pins	2		X1, X3		Molex	22013047	Digimouse	1234
+3	Connector, Molex KK 254, female, 4 pins	1		X2	CON4	Molex	22013047	Digimouse	1234
+4	Crimp, Molex KK 254, 22-30 AWG	12		X1, X2, X3		Molex	08500030		
+5	Label, pinout information	2		X2, X3	Label-ID-1	Brady	B-499		
+6	Sleve, Braided nylon, black, 3mm	1	m	W2	SLV-1				
+7	Test	3		X1, X2, X3	ABC	Molex	45454	Mousikey	9999
+8	Wire, 0.25 mm², BK	2	m	W2	WIRE2	WiresCo	W1-BK	WireShack	1002
+9	Wire, 0.25 mm², RD	1	m	W2	WIRE3	WiresCo	W1-RD	WireShack	1009
+10	Wire, 0.25 mm², YE	1	m	W2	WIRE1	WiresCo	W1-YE	WireShack	1001
diff --git a/tutorial/tutorial08.gv b/tutorial/tutorial08.gv
index 1bf2194d..3203ad5c 100644
--- a/tutorial/tutorial08.gv
+++ b/tutorial/tutorial08.gv
@@ -1,8 +1,8 @@
 graph {
-// Graph generated by WireViz 0.2
+// Graph generated by WireViz 0.3
 // https://github.com/formatc1702/WireViz
-	graph [bgcolor=white fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
-	node [fillcolor=white fontname=arial shape=record style=filled]
+	graph [bgcolor="#FFFFFF" fontname=arial nodesep=0.33 rankdir=LR ranksep=2]
+	node [fillcolor="#FFFFFF" fontname=arial height=0 margin=0 shape=none style=filled width=0]
 	edge [fontname=arial style=bold]
 	X1 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
@@ -14,6 +14,7 @@ graph {
  <tr><td>
   <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>
    <td balign="left">Molex: 22013047</td>
+   <td balign="left">Digimouse: 1234</td>
   </tr></table>
  </td></tr>
  <tr><td>
@@ -39,8 +40,23 @@ graph {
    </tr>
   </table>
  </td></tr>
+ <tr><td>
+  <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>
+   <td balign="left">Additional components</td>
+  </tr></table>
+ </td></tr>
+ <tr><td>
+  <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>
+   <td align="left" balign="left">4 x Crimp, Molex KK 254, 22-30 AWG<br/>Molex: 08500030</td>
+  </tr></table>
+ </td></tr>
+ <tr><td>
+  <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>
+   <td align="left" balign="left">1 x Test<br/>P/N: ABC, Molex: 45454, Mousikey: 9999</td>
+  </tr></table>
+ </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X2 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -52,6 +68,7 @@ graph {
   <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>
    <td balign="left">P/N: CON4</td>
    <td balign="left">Molex: 22013047</td>
+   <td balign="left">Digimouse: 1234</td>
   </tr></table>
  </td></tr>
  <tr><td>
@@ -77,8 +94,23 @@ graph {
    </tr>
   </table>
  </td></tr>
+ <tr><td>
+  <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>
+   <td balign="left">Additional components</td>
+  </tr></table>
+ </td></tr>
+ <tr><td>
+  <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>
+   <td align="left" balign="left">4 x Crimp, Molex KK 254, 22-30 AWG<br/>Molex: 08500030</td>
+  </tr></table>
+ </td></tr>
+ <tr><td>
+  <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>
+   <td align="left" balign="left">1 x Test<br/>P/N: ABC, Molex: 45454, Mousikey: 9999</td>
+  </tr></table>
+ </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	X3 [label=<
 <table border="0" cellspacing="0" cellpadding="0">
  <tr><td>
@@ -89,6 +121,7 @@ graph {
  <tr><td>
   <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>
    <td balign="left">Molex: 22013047</td>
+   <td balign="left">Digimouse: 1234</td>
   </tr></table>
  </td></tr>
  <tr><td>
@@ -114,8 +147,23 @@ graph {
    </tr>
   </table>
  </td></tr>
+ <tr><td>
+  <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>
+   <td balign="left">Additional components</td>
+  </tr></table>
+ </td></tr>
+ <tr><td>
+  <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>
+   <td align="left" balign="left">4 x Crimp, Molex KK 254, 22-30 AWG<br/>Molex: 08500030</td>
+  </tr></table>
+ </td></tr>
+ <tr><td>
+  <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>
+   <td align="left" balign="left">1 x Test<br/>P/N: ABC, Molex: 45454, Mousikey: 9999</td>
+  </tr></table>
+ </td></tr>
 </table>
-> fillcolor=white margin=0 shape=none style=filled]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#895956:#000000"]
 	X1:p1r:e -- W1:w1:w
 	W1:w1:e -- X2:p1l:w
@@ -139,6 +187,7 @@ graph {
   <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>
    <td balign="left">P/N: CAB1</td>
    <td balign="left">CablesCo: ABC123</td>
+   <td balign="left">Cables R Us: 999-888-777</td>
   </tr></table>
  </td></tr>
  <tr><td>
@@ -153,7 +202,9 @@ graph {
    <tr><td>&nbsp;</td></tr>
    <tr>
     <td>X1:1</td>
-    <td>BN</td>
+    <td>
+     1:BN
+    </td>
     <td>X2:1</td>
    </tr>
    <tr>
@@ -167,7 +218,9 @@ graph {
    </tr>
    <tr>
     <td>X1:2</td>
-    <td>RD</td>
+    <td>
+     2:RD
+    </td>
     <td>X2:2</td>
    </tr>
    <tr>
@@ -181,7 +234,9 @@ graph {
    </tr>
    <tr>
     <td>X1:3</td>
-    <td>OG</td>
+    <td>
+     3:OG
+    </td>
     <td>X2:3</td>
    </tr>
    <tr>
@@ -195,7 +250,9 @@ graph {
    </tr>
    <tr>
     <td>X1:4</td>
-    <td>YE</td>
+    <td>
+     4:YE
+    </td>
     <td>X2:4</td>
    </tr>
    <tr>
@@ -211,7 +268,7 @@ graph {
   </table>
  </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style=""]
+> fillcolor="#FFFFFF" shape=box style=filled]
 	edge [color="#000000:#ffff00:#000000"]
 	X1:p1r:e -- W2:w1:w
 	W2:w1:e -- X3:p1l:w
@@ -243,7 +300,9 @@ graph {
    <tr><td>&nbsp;</td></tr>
    <tr>
     <td>X1:1</td>
-    <td>YE</td>
+    <td>
+     YE
+    </td>
     <td>X3:1</td>
    </tr>
    <tr>
@@ -259,11 +318,14 @@ graph {
     <table border="0" cellspacing="0" cellborder="0"><tr>
      <td>P/N: WIRE1</td>
      <td>WiresCo: W1-YE</td>
+     <td>WireShack: 1001</td>
     </tr></table>
    </td></tr>
    <tr>
     <td>X1:2</td>
-    <td>BK</td>
+    <td>
+     BK
+    </td>
     <td>X3:2</td>
    </tr>
    <tr>
@@ -279,11 +341,14 @@ graph {
     <table border="0" cellspacing="0" cellborder="0"><tr>
      <td>P/N: WIRE2</td>
      <td>WiresCo: W1-BK</td>
+     <td>WireShack: 1002</td>
     </tr></table>
    </td></tr>
    <tr>
     <td>X1:3</td>
-    <td>BK</td>
+    <td>
+     BK
+    </td>
     <td>X3:3</td>
    </tr>
    <tr>
@@ -299,11 +364,14 @@ graph {
     <table border="0" cellspacing="0" cellborder="0"><tr>
      <td>P/N: WIRE2</td>
      <td>WiresCo: W1-BK</td>
+     <td>WireShack: 1002</td>
     </tr></table>
    </td></tr>
    <tr>
     <td>X1:4</td>
-    <td>RD</td>
+    <td>
+     RD
+    </td>
     <td>X3:4</td>
    </tr>
    <tr>
@@ -319,11 +387,22 @@ graph {
     <table border="0" cellspacing="0" cellborder="0"><tr>
      <td>P/N: WIRE3</td>
      <td>WiresCo: W1-RD</td>
+     <td>WireShack: 1009</td>
     </tr></table>
    </td></tr>
    <tr><td>&nbsp;</td></tr>
   </table>
  </td></tr>
+ <tr><td>
+  <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>
+   <td balign="left">Additional components</td>
+  </tr></table>
+ </td></tr>
+ <tr><td>
+  <table border="0" cellspacing="0" cellpadding="3" cellborder="1"><tr>
+   <td align="left" balign="left">1 m x Sleve, Braided nylon, black, 3mm<br/>P/N: SLV-1</td>
+  </tr></table>
+ </td></tr>
 </table>
-> fillcolor=white margin=0 shape=box style="filled,dashed"]
+> fillcolor="#FFFFFF" shape=box style="filled,dashed"]
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diff --git a/tutorial/tutorial08.html b/tutorial/tutorial08.html
index 75a5219d..314bb6a9 100644
--- a/tutorial/tutorial08.html
+++ b/tutorial/tutorial08.html
@@ -1,290 +1,468 @@
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 <html lang="en"><head>
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+ <title>tutorial08</title>
+</head><body style="font-family:arial;background-color:#FFFFFF">
+<h1>tutorial08</h1>
+<h2>Diagram</h2>
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+<text text-anchor="start" x="4.5" y="-198.8" font-family="arial" font-size="14.00">1 x Test</text>
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+  <td style="border:1px solid #000000; padding: 4px">W1</td>
+  <td style="border:1px solid #000000; padding: 4px">CAB1</td>
+  <td style="border:1px solid #000000; padding: 4px">CablesCo</td>
+  <td style="border:1px solid #000000; padding: 4px">ABC123</td>
+  <td style="border:1px solid #000000; padding: 4px">Cables R Us</td>
+  <td style="border:1px solid #000000; padding: 4px">999-888-777</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">2</td>
+  <td style="border:1px solid #000000; padding: 4px">Connector, Molex KK 254, female, 4 pins</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">2</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px">X1, X3</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px"><a href="https://www.molex.com/">Molex</a></td>
+  <td style="border:1px solid #000000; padding: 4px"><a href="https://www.molex.com/molex/products/part-detail/crimp_housings/0022013047">22013047</a></td>
+  <td style="border:1px solid #000000; padding: 4px">Digimouse</td>
+  <td style="border:1px solid #000000; padding: 4px">1234</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">3</td>
+  <td style="border:1px solid #000000; padding: 4px">Connector, Molex KK 254, female, 4 pins</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">1</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px">X2</td>
+  <td style="border:1px solid #000000; padding: 4px">CON4</td>
+  <td style="border:1px solid #000000; padding: 4px"><a href="https://www.molex.com/">Molex</a></td>
+  <td style="border:1px solid #000000; padding: 4px"><a href="https://www.molex.com/molex/products/part-detail/crimp_housings/0022013047">22013047</a></td>
+  <td style="border:1px solid #000000; padding: 4px">Digimouse</td>
+  <td style="border:1px solid #000000; padding: 4px">1234</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">4</td>
+  <td style="border:1px solid #000000; padding: 4px">Crimp, Molex KK 254, 22-30 AWG</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">12</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px">X1, X2, X3</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px">Molex</td>
+  <td style="border:1px solid #000000; padding: 4px">08500030</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">5</td>
+  <td style="border:1px solid #000000; padding: 4px">Label, pinout information</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">2</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px">X2, X3</td>
+  <td style="border:1px solid #000000; padding: 4px">Label-ID-1</td>
+  <td style="border:1px solid #000000; padding: 4px"><a href="https://www.bradyid.com">Brady</a></td>
+  <td style="border:1px solid #000000; padding: 4px"><a href="https://www.bradyid.com/wire-cable-labels/bmp71-bmp61-m611-tls-2200-nylon-cloth-wire-general-id-labels-cps-2958789">B-499</a></td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">6</td>
+  <td style="border:1px solid #000000; padding: 4px">Sleve, Braided nylon, black, 3mm</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">1</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W2</td>
+  <td style="border:1px solid #000000; padding: 4px">SLV-1</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">7</td>
+  <td style="border:1px solid #000000; padding: 4px">Test</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">3</td>
+  <td style="border:1px solid #000000; padding: 4px"></td>
+  <td style="border:1px solid #000000; padding: 4px">X1, X2, X3</td>
+  <td style="border:1px solid #000000; padding: 4px">ABC</td>
+  <td style="border:1px solid #000000; padding: 4px">Molex</td>
+  <td style="border:1px solid #000000; padding: 4px">45454</td>
+  <td style="border:1px solid #000000; padding: 4px">Mousikey</td>
+  <td style="border:1px solid #000000; padding: 4px">9999</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">8</td>
+  <td style="border:1px solid #000000; padding: 4px">Wire, 0.25 mm&sup2;, BK</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">2</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W2</td>
+  <td style="border:1px solid #000000; padding: 4px">WIRE2</td>
+  <td style="border:1px solid #000000; padding: 4px">WiresCo</td>
+  <td style="border:1px solid #000000; padding: 4px">W1-BK</td>
+  <td style="border:1px solid #000000; padding: 4px">WireShack</td>
+  <td style="border:1px solid #000000; padding: 4px">1002</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">9</td>
+  <td style="border:1px solid #000000; padding: 4px">Wire, 0.25 mm&sup2;, RD</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">1</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W2</td>
+  <td style="border:1px solid #000000; padding: 4px">WIRE3</td>
+  <td style="border:1px solid #000000; padding: 4px">WiresCo</td>
+  <td style="border:1px solid #000000; padding: 4px">W1-RD</td>
+  <td style="border:1px solid #000000; padding: 4px">WireShack</td>
+  <td style="border:1px solid #000000; padding: 4px">1009</td>
+ </tr>
+ <tr>
+  <td style="border:1px solid #000000; padding: 4px">10</td>
+  <td style="border:1px solid #000000; padding: 4px">Wire, 0.25 mm&sup2;, YE</td>
+  <td style="border:1px solid #000000; padding: 4px; text-align:right">1</td>
+  <td style="border:1px solid #000000; padding: 4px">m</td>
+  <td style="border:1px solid #000000; padding: 4px">W2</td>
+  <td style="border:1px solid #000000; padding: 4px">WIRE1</td>
+  <td style="border:1px solid #000000; padding: 4px">WiresCo</td>
+  <td style="border:1px solid #000000; padding: 4px">W1-YE</td>
+  <td style="border:1px solid #000000; padding: 4px">WireShack</td>
+  <td style="border:1px solid #000000; padding: 4px">1001</td>
+ </tr>
+</table>
+</body></html>
diff --git a/tutorial/tutorial08.md b/tutorial/tutorial08.md
index 1fc884e7..87298ab4 100644
--- a/tutorial/tutorial08.md
+++ b/tutorial/tutorial08.md
@@ -1,6 +1,7 @@
-## Part numbers
+## Part numbers and additional components
 
 * Part number information can be added to parts
   * Only provided fields will be added to the diagram and bom
 * Bundles can have part information specified by wire
-* Additional parts can be added to the bom
+* Additional parts can be added to components or just to the bom
+  * quantities of additional components can be multiplied by features from parent connector or cable
diff --git a/tutorial/tutorial08.png b/tutorial/tutorial08.png
index e75d27ab..d2b10be4 100644
Binary files a/tutorial/tutorial08.png and b/tutorial/tutorial08.png differ
diff --git a/tutorial/tutorial08.svg b/tutorial/tutorial08.svg
index 9b4546a3..a6125f23 100644
--- a/tutorial/tutorial08.svg
+++ b/tutorial/tutorial08.svg
@@ -1,285 +1,326 @@
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diff --git a/tutorial/tutorial08.yml b/tutorial/tutorial08.yml
index 2568f29b..1e5e4f20 100644
--- a/tutorial/tutorial08.yml
+++ b/tutorial/tutorial08.yml
@@ -1,13 +1,34 @@
+options:
+  mini_bom_mode: false
+
 connectors:
   X1: &template1 # define a template for later use
     type: Molex KK 254
     pincount: 4
     subtype: female
-    manufacturer: Molex # set manufacter name
-    mpn: 22013047 # set manufacturer part number
+    manufacturer: '<a href="https://www.molex.com/">Molex</a>' # set manufacter name
+    mpn: '<a href="https://www.molex.com/molex/products/part-detail/crimp_housings/0022013047">22013047</a>' # set manufacturer part number
+    supplier: Digimouse
+    spn: 1234
+    # add a list of additional components to a part (shown in graph)
+    additional_components:
+      -
+        type: Crimp # short identifier used in graph
+        subtype: Molex KK 254, 22-30 AWG # extra information added to type in bom
+        qty_multiplier: populated # multipier for quantity (number of populated pins)
+        manufacturer: Molex # set manufacter name
+        mpn: 08500030 # set manufacturer part number
+      -
+        type: Test
+        qty: 1
+        pn: ABC
+        manufacturer: Molex
+        mpn: 45454
+        supplier: Mousikey
+        spn: 9999
   X2:
     <<: *template1 # reuse template
-    pn: CON4 # set an internal part number
+    pn: CON4 # set an internal part number for just this connector
   X3:
     <<: *template1 # reuse template
 
@@ -19,6 +40,8 @@ cables:
     color_code: IEC
     manufacturer: CablesCo
     mpn: ABC123
+    supplier: Cables R Us
+    spn: 999-888-777
     pn: CAB1
   W2:
     category: bundle
@@ -27,7 +50,17 @@ cables:
     colors: [YE, BK, BK, RD]
     manufacturer: [WiresCo,WiresCo,WiresCo,WiresCo] # set a manufacter per wire
     mpn: [W1-YE,W1-BK,W1-BK,W1-RD]
+    supplier: [WireShack,WireShack,WireShack,WireShack]
+    spn: [1001,1002,1002,1009]
     pn: [WIRE1,WIRE2,WIRE2,WIRE3]
+    # add a list of additional components to a part (shown in graph)
+    additional_components:
+      -
+        type: Sleve # short identifier used in graph
+        subtype: Braided nylon, black, 3mm # extra information added to type in bom
+        qty_multiplier: length # multipier for quantity (length of cable)
+        unit: m
+        pn: SLV-1
 
 
 connections:
@@ -41,12 +74,12 @@ connections:
     - X3: [1-4]
 
 additional_bom_items:
-  - # define an additional item to add to the bill of materials
+  - # define an additional item to add to the bill of materials (does not appear in graph)
     description: Label, pinout information
     qty: 2
     designators:
       - X2
       - X3
-    manufacturer: generic company
-    mpn: Label1
+    manufacturer: '<a href="https://www.bradyid.com">Brady</a>'
+    mpn: '<a href="https://www.bradyid.com/wire-cable-labels/bmp71-bmp61-m611-tls-2200-nylon-cloth-wire-general-id-labels-cps-2958789">B-499</a>'
     pn: Label-ID-1