Merged in colombo/add-group-page (pull request #5)

Add a new Group page

Approved-by: Zack Lovatt

docs/group.rst

@@ -0,0 +1,88 @@
+.. _Group:
+
+Group
+##############
+
+All properties im the Timeline are organized into groups, which share some attributes of properties like ``name`` and ``propertyIndex``. Groups can have a fixed number of properties (e.g. an individual effect whose properties don't change) or a variable number of properties (e.g. the Effects group itself which can have any number of effect within it).
+
+* **Top-level groups in a Layer:**
+	* Motion Trackers
+	* Text
+	* Contents
+	* Masks
+	* Effects
+	* Transform
+	* Layer Styles
+	* Geometry Options
+	* Material Options
+	* Audio
+	* Data
+	* Essential Properties
+* **Nested groups**
+	* Individual effects
+	* Individual masks
+	* Shape groups
+	* Text Animators
+
+----
+
+.. _Group.numProperties:
+
+numProperties
+*****************
+
+**Description**
+
+Returns the number of properties or groups directly within a group. This does not include properties nested inside child groups.
+
+.. tip::
+	Find the number of effects applied to a layer with ``thisLayer("ADBE Effect Parade").numProperties`` using the match name to remain language-agnostic.
+
+**Type**
+
+Number
+
+----
+
+.. _Group.propertyGroup:
+
+propertyGroup(``countUp=1``)
+******************************
+
+**Description**
+
+Returns a higher-level property group relative to the property group on which the method is called. See :ref:`Property.propertyGroup` for additional details.
+
+**Type**
+
+Group
+
+----
+
+.. _Group.propertyIndex:
+
+propertyIndex
+*****************
+
+**Description**
+
+Returns the index of a property group relative to other properties or groups in its property group.
+
+**Type**
+
+Number
+
+----
+
+.. _Group.name:
+
+name
+*****************
+
+**Description**
+
+Returns the name of the property group.
+
+**Type**
+
+String

docs/index.rst

@@ -33,6 +33,7 @@ After Effects Expression Reference
     footage
     camera
     light
+    group
     effect
     mask
     property