diff --git a/conf.py b/conf.py
index 4ca4da9..04b29d7 100644
--- a/conf.py
+++ b/conf.py
@@ -21,8 +21,8 @@
 copyright = '2019--2024, EditorConfig Team'
 author = 'EditorConfig Team'
 
-version = '0.16.1'
-release = '0.16.1'
+version = '0.17.1'
+release = '0.17.1'
 
 # -- General configuration ---------------------------------------------------
 
diff --git a/index.rst b/index.rst
index 9abf5fa..cc44432 100644
--- a/index.rst
+++ b/index.rst
@@ -73,6 +73,8 @@ EditorConfig organization.
 File Format
 ===========
 
+.. versionchanged:: 0.17.0
+
 EditorConfig files are in an INI-like file format.
 In an EditorConfig file, all beginning whitespace on each line is considered
 irrelevant. Each line must be one of the following:
@@ -94,7 +96,7 @@ irrelevant. Each line must be one of the following:
 
 Any line that is not one of the above is invalid.
 
-EditorConfig files should be UTF-8 encoded, with LF or CRLF line separators.
+EditorConfig files must be UTF-8 encoded, with LF or CRLF line separators.
 
 No inline comments
 ------------------
@@ -160,6 +162,13 @@ special characters for wildcard matching:
      - any integer numbers between ``num1`` and ``num2``, where ``num1`` and ``num2``
        can be either positive or negative
 
+If the glob contains a path separator (a ``/`` not inside square brackets), then the glob is relative
+to the directory level of the particular `.editorconfig` file itself.
+Otherwise the pattern may also match at any level below the `.editorconfig`
+level. For example, ``*.c`` matches any file that ends with ``.c`` in the
+directory of ``.editorconfig``, but ``subdir/*.c`` only matches files that end
+with ``.c`` in the ``subdir`` directory in the directory of ``.editorconfig``.
+
 The backslash character (``\\``) can be used to escape a character so it is
 not interpreted as a special character.