removed embedded YT

Author: lastic

BBS.md

@@ -14,16 +14,15 @@ or magazines or if you were lucky at a local computer club.
 Modems brought connecting from your home to the outside world into existence via
 Bulletin Boards.
 This very long documentary telling the entire history of BulletinBoards and its origins.
-{% include embed.html url="https://www.youtube.com/watch?v=nO5vjmDFZa" %}
+[BBSDOC](https://www.youtube.com/watch?v=nO5vjmDFZa)
 
 The systems provide a way to connect with other online users, share/trade knowledge
 and files before Napster/Limewire/Kazaa.
 
 A lot of companies offered public bulletin boards as a way to provide user-support
 , universities, libraries, all of them offered some form of interaction.
 
-Here is nice more recent documentary about the BBS history and current evolution
-{% include embed.html url="https://www.youtube.com/playlist?list=PLop3s1hMlSJKXqmuFjK7gbJh2WAyllTTY" %}
+Here is nice more recent documentary [BBSNEW](https://www.youtube.com/playlist?list=PLop3s1hMlSJKXqmuFjK7gbJh2WAyllTTY) about the BBS history and current evolution
 
 But the Pirate scene offered world-wide connections and software .
 I was however not too heavily involved in the illegal software trading but rather
@@ -45,5 +44,4 @@ as a service to connect to them.
 
 There are still BBSes who still run the oldschool way , a real modem on an analog phone line.
 
-You can find a list of Atari specific BBSes here
-![ATARIBBS](http://www.sfhqbbs.org/ataribbslist.php)
+You can find a list of Atari specific BBSes here [ATARIBBS](http://www.sfhqbbs.org/ataribbslist.php)

_posts/2017-01-01-advanced-examples.md

@@ -0,0 +1,63 @@
+---
+title:  "Advanced examples"
+mathjax: true
+layout: post
+categories: media
+---
+
+![Swiss Alps](https://user-images.githubusercontent.com/4943215/55412536-edbba180-5567-11e9-9c70-6d33bca3f8ed.jpg)
+
+
+## MathJax
+
+You can enable MathJax by setting `mathjax: true` on a page or globally in the `_config.yml`. Some examples:
+
+[Euler's formula](https://en.wikipedia.org/wiki/Euler%27s_formula) relates the  complex exponential function to the trigonometric functions.
+
+$$ e^{i\theta}=\cos(\theta)+i\sin(\theta) $$
+
+The [Euler-Lagrange](https://en.wikipedia.org/wiki/Lagrangian_mechanics) differential equation is the fundamental equation of calculus of variations.
+
+$$ \frac{\mathrm{d}}{\mathrm{d}t} \left ( \frac{\partial L}{\partial \dot{q}} \right ) = \frac{\partial L}{\partial q} $$
+
+The [Schrödinger equation](https://en.wikipedia.org/wiki/Schr%C3%B6dinger_equation) describes how the quantum state of a quantum system changes with time.
+
+$$ i\hbar\frac{\partial}{\partial t} \Psi(\mathbf{r},t) = \left [ \frac{-\hbar^2}{2\mu}\nabla^2 + V(\mathbf{r},t)\right ] \Psi(\mathbf{r},t) $$
+
+## Code
+
+Embed code by putting `{{ "{% highlight language " }}%}` `{{ "{% endhighlight " }}%}` blocks around it. Adding the parameter `linenos` will show source lines besides the code.
+
+{% highlight c %}
+
+static void asyncEnabled(Dict* args, void* vAdmin, String* txid, struct Allocator* requestAlloc)
+{
+    struct Admin* admin = Identity_check((struct Admin*) vAdmin);
+    int64_t enabled = admin->asyncEnabled;
+    Dict d = Dict_CONST(String_CONST("asyncEnabled"), Int_OBJ(enabled), NULL);
+    Admin_sendMessage(&d, txid, admin);
+}
+
+{% endhighlight %}
+
+## Gists
+
+With the `jekyll-gist` plugin, which is preinstalled on Github Pages, you can embed gists simply by using the `gist` command:
+
+<script src="https://gist.github.com/5555251.js?file=gist.md"></script>
+
+## Images
+
+Upload an image to the *assets* folder and embed it with `![title](/assets/name.jpg))`. Keep in mind that the path needs to be adjusted if Jekyll is run inside a subfolder.
+
+A wrapper `div` with the class `large` can be used to increase the width of an image or iframe.
+
+![Flower](https://user-images.githubusercontent.com/4943215/55412447-bcdb6c80-5567-11e9-8d12-b1e35fd5e50c.jpg)
+
+[Flower](https://unsplash.com/photos/iGrsa9rL11o) by Tj Holowaychuk
+
+## Embedded content
+
+You can also embed a lot of stuff, for example from YouTube, using the `embed.html` include.
+
+{% include embed.html url="https://www.youtube.com/embed/_C0A5zX-iqM" %}