14 files changed, 83 insertions, 17 deletions
diff --git a/doc/classes/@GDScript.xml b/doc/classes/@GDScript.xml
index 072eec800f..a7b58352cc 100644
--- a/doc/classes/@GDScript.xml
+++ b/doc/classes/@GDScript.xml
@@ -828,7 +828,7 @@
 			<return type="float">
 			</return>
 			<description>
-				Returns a random floating point value between 0 and 1.
+				Returns a random floating point value on the interval [code][0, 1][/code].
 				[codeblock]
 				randf() # returns 0.375671
 				[/codeblock]
@@ -838,7 +838,7 @@
 			<return type="int">
 			</return>
 			<description>
-				Returns a random 32 bit integer. Use remainder to obtain a random value between 0 and N (where N is smaller than 2^32 -1).
+				Returns a random 32 bit integer. Use remainder to obtain a random value in the interval [code][0, N][/code] (where N is smaller than 2^32 -1).
 				[codeblock]
 				randi() % 20      # returns random number between 0 and 19
 				randi() % 100     # returns random number between 0 and 99
diff --git a/doc/classes/Animation.xml b/doc/classes/Animation.xml
index a7cae709a4..eaaa64d53d 100644
--- a/doc/classes/Animation.xml
+++ b/doc/classes/Animation.xml
@@ -648,6 +648,12 @@
 			The animation step value.
 		</member>
 	</members>
+	<signals>
+		<signal name="tracks_changed">
+			<description>
+			</description>
+		</signal>
+	</signals>
 	<constants>
 		<constant name="TYPE_VALUE" value="0" enum="TrackType">
 			Value tracks set values in node properties, but only those which can be Interpolated.
diff --git a/doc/classes/Engine.xml b/doc/classes/Engine.xml
index f921b76b21..b8808b8b53 100644
--- a/doc/classes/Engine.xml
+++ b/doc/classes/Engine.xml
@@ -90,9 +90,17 @@
 				"major"    - Holds the major version number as an int
 				"minor"    - Holds the minor version number as an int
 				"patch"    - Holds the patch version number as an int
+				"hex"      - Holds the full version number encoded as an hexadecimal int with one byte (2 places) per number (see example below)
 				"status"   - Holds the status (e.g. "beta", "rc1", "rc2", ... "stable") as a String
 				"build"    - Holds the build name (e.g. "custom-build") as a String
 				"string"   - major + minor + patch + status + build in a single String
+				The "hex" value is encoded as follows, from left to right: one byte for the major, one byte for the minor, one byte for the patch version. For example, "3.1.12" would be [code]0x03010C[/code]. Note that it's still an int internally, and printing it will give you its decimal representation, which is not particularly meaningful. Use hexadecimal literals for easy version comparisons from code:
+				[codeblock]
+				if Engine.get_version_info().hex >= 0x030200:
+				    # do things specific to version 3.2 or later
+				else:
+				    # do things specific to versions before 3.2
+				[/codeblock]
 			</description>
 		</method>
 		<method name="has_singleton" qualifiers="const">
diff --git a/doc/classes/File.xml b/doc/classes/File.xml
index 6462176c73..c9a8f18116 100644
--- a/doc/classes/File.xml
+++ b/doc/classes/File.xml
@@ -38,7 +38,7 @@
 			<return type="bool">
 			</return>
 			<description>
-				Returns [code]true[/code] if the file cursor has reached the end of the file.
+				Returns [code]true[/code] if the file cursor has read past the end of the file. Note that this function will still return [code]false[/code] while at the end of the file and only activates when reading past it. This can be confusing but it conforms to how low level file access works in all operating systems. There is always [method get_len] and [method get_position] to implement a custom logic.
 			</description>
 		</method>
 		<method name="file_exists" qualifiers="const">
diff --git a/doc/classes/MultiMesh.xml b/doc/classes/MultiMesh.xml
index 7986461840..565e19c229 100644
--- a/doc/classes/MultiMesh.xml
+++ b/doc/classes/MultiMesh.xml
@@ -48,6 +48,14 @@
 				Return the transform of a specific instance.
 			</description>
 		</method>
+		<method name="get_instance_transform_2d" qualifiers="const">
+			<return type="Transform2D">
+			</return>
+			<argument index="0" name="instance" type="int">
+			</argument>
+			<description>
+			</description>
+		</method>
 		<method name="set_instance_color">
 			<return type="void">
 			</return>
@@ -81,6 +89,16 @@
 				Set the transform for a specific instance.
 			</description>
 		</method>
+		<method name="set_instance_transform_2d">
+			<return type="void">
+			</return>
+			<argument index="0" name="instance" type="int">
+			</argument>
+			<argument index="1" name="transform" type="Transform2D">
+			</argument>
+			<description>
+			</description>
+		</method>
 	</methods>
 	<members>
 		<member name="color_format" type="int" setter="set_color_format" getter="get_color_format" enum="MultiMesh.ColorFormat">
diff --git a/doc/classes/OS.xml b/doc/classes/OS.xml
index f6ad71b6e2..5e71ed094e 100644
--- a/doc/classes/OS.xml
+++ b/doc/classes/OS.xml
@@ -159,6 +159,13 @@
 			<description>
 			</description>
 		</method>
+		<method name="get_current_video_driver" qualifiers="const">
+			<return type="int" enum="OS.VideoDriver">
+			</return>
+			<description>
+				Returns the currently used video driver, using one of the values from [enum OS.VideoDriver].
+			</description>
+		</method>
 		<method name="get_date" qualifiers="const">
 			<return type="Dictionary">
 			</return>
@@ -459,14 +466,16 @@
 			<return type="int">
 			</return>
 			<description>
+				Returns the number of video drivers supported on the current platform.
 			</description>
 		</method>
 		<method name="get_video_driver_name" qualifiers="const">
 			<return type="String">
 			</return>
-			<argument index="0" name="driver" type="int">
+			<argument index="0" name="driver" type="int" enum="OS.VideoDriver">
 			</argument>
 			<description>
+				Returns the name of the video driver matching the given [code]driver[/code] index. This index is a value from [enum OS.VideoDriver], and you can use [method get_current_video_driver] to get the current backend's index.
 			</description>
 		</method>
 		<method name="get_virtual_keyboard_height">
@@ -806,6 +815,12 @@
 		</member>
 	</members>
 	<constants>
+		<constant name="VIDEO_DRIVER_GLES2" value="1" enum="VideoDriver">
+			The GLES2 rendering backend. It uses OpenGL ES 2.0 on mobile devices, OpenGL 2.1 on desktop platforms and WebGL 1.0 on the web.
+		</constant>
+		<constant name="VIDEO_DRIVER_GLES3" value="0" enum="VideoDriver">
+			The GLES3 rendering backend. It uses OpenGL ES 3.0 on mobile devices, OpenGL 3.3 on desktop platforms and WebGL 2.0 on the web.
+		</constant>
 		<constant name="DAY_SUNDAY" value="0" enum="Weekday">
 			Sunday.
 		</constant>
diff --git a/doc/classes/OptionButton.xml b/doc/classes/OptionButton.xml
index 09b9167149..0f795b4bf8 100644
--- a/doc/classes/OptionButton.xml
+++ b/doc/classes/OptionButton.xml
@@ -74,15 +74,15 @@
 				Return the ID of the item at index [code]idx[/code].
 			</description>
 		</method>
-                <method name="get_item_index" qualifiers="const">
-                        <return type="int">
-                        </return>
-                        <argument index="0" name="id" type="int">
-                        </argument>
-                        <description>
-                                Return the index of the item with the given [code]id[/code].
-                        </description>
-                </method>
+		<method name="get_item_index" qualifiers="const">
+			<return type="int">
+			</return>
+			<argument index="0" name="id" type="int">
+			</argument>
+			<description>
+				Return the index of the item with the given [code]id[/code].
+			</description>
+		</method>
 		<method name="get_item_metadata" qualifiers="const">
 			<return type="Variant">
 			</return>
diff --git a/doc/classes/Physics2DServer.xml b/doc/classes/Physics2DServer.xml
index fe1465260f..341457a2b3 100644
--- a/doc/classes/Physics2DServer.xml
+++ b/doc/classes/Physics2DServer.xml
@@ -1112,6 +1112,8 @@
 		<constant name="SPACE_PARAM_CONSTRAINT_DEFAULT_BIAS" value="6" enum="SpaceParameter">
 			Constant to set/get the default solver bias for all physics constraints. A solver bias is a factor controlling how much two objects "rebound", after violating a constraint, to avoid leaving them in that state because of numerical imprecision.
 		</constant>
+		<constant name="SPACE_PARAM_TEST_MOTION_MIN_CONTACT_DEPTH" value="7" enum="SpaceParameter">
+		</constant>
 		<constant name="SHAPE_LINE" value="0" enum="ShapeType">
 			This is the constant for creating line shapes. A line shape is an infinite line with an origin point, and a normal. Thus, it can be used for front/behind checks.
 		</constant>
diff --git a/doc/classes/PhysicsServer.xml b/doc/classes/PhysicsServer.xml
index e3ed43e7bc..b797e6ecf7 100644
--- a/doc/classes/PhysicsServer.xml
+++ b/doc/classes/PhysicsServer.xml
@@ -1595,6 +1595,8 @@
 		<constant name="SPACE_PARAM_CONSTRAINT_DEFAULT_BIAS" value="7" enum="SpaceParameter">
 			Constant to set/get the default solver bias for all physics constraints. A solver bias is a factor controlling how much two objects "rebound", after violating a constraint, to avoid leaving them in that state because of numerical imprecision.
 		</constant>
+		<constant name="SPACE_PARAM_TEST_MOTION_MIN_CONTACT_DEPTH" value="8" enum="SpaceParameter">
+		</constant>
 		<constant name="BODY_AXIS_LINEAR_X" value="1" enum="BodyAxis">
 		</constant>
 		<constant name="BODY_AXIS_LINEAR_Y" value="2" enum="BodyAxis">
diff --git a/doc/classes/RandomNumberGenerator.xml b/doc/classes/RandomNumberGenerator.xml
index 5badfba923..fff13402f1 100644
--- a/doc/classes/RandomNumberGenerator.xml
+++ b/doc/classes/RandomNumberGenerator.xml
@@ -43,7 +43,7 @@
 			<argument index="1" name="to" type="int">
 			</argument>
 			<description>
-				Generates pseudo-random 32-bit signed integer between [code]from[/code] and [code]to[/code](inclusive).
+				Generates pseudo-random 32-bit signed integer between [code]from[/code] and [code]to[/code] (inclusive).
 			</description>
 		</method>
 		<method name="randomize">
@@ -56,6 +56,7 @@
 	</methods>
 	<members>
 		<member name="seed" type="int" setter="set_seed" getter="get_seed">
+			The seed used by the random number generator. A given seed will give a reproducible sequence of pseudo-random numbers.
 		</member>
 	</members>
 	<constants>
diff --git a/doc/classes/Resource.xml b/doc/classes/Resource.xml
index fc42635ce2..4369f77abd 100644
--- a/doc/classes/Resource.xml
+++ b/doc/classes/Resource.xml
@@ -4,9 +4,10 @@
 		Base class for all resources.
 	</brief_description>
 	<description>
-		Resource is the base class for all resource types. Resources are primarily data containers. They are reference counted and freed when no longer in use. They are also loaded only once from disk, and further attempts to load the resource will return the same reference (all this in contrast to a [Node], which is not reference counted and can be instanced from disk as many times as desired). Resources can be saved externally on disk or bundled into another object, such as a [Node] or another resource.
+		Resource is the base class for all resource types, serving primarily as data containers. They are reference counted and freed when no longer in use. They are also loaded only once from disk, and further attempts to load the resource will return the same reference (all this in contrast to a [Node], which is not reference counted and can be instanced from disk as many times as desired). Resources can be saved externally on disk or bundled into another object, such as a [Node] or another resource.
 	</description>
 	<tutorials>
+		<link>https://docs.godotengine.org/en/stable/getting_started/step_by_step/resources.html</link>
 	</tutorials>
 	<demos>
 	</demos>
@@ -23,6 +24,7 @@
 			<argument index="0" name="subresources" type="bool" default="false">
 			</argument>
 			<description>
+				Duplicates the resource, returning a new resource. By default, sub-resources are shared between resource copies for efficiency, this can be changed by passing [code]true[/code] to the [code]subresources[/code] argument.
 			</description>
 		</method>
 		<method name="get_local_scene" qualifiers="const">
@@ -35,7 +37,7 @@
 			<return type="RID">
 			</return>
 			<description>
-				Return the RID of the resource (or an empty RID). Many resources (such as [Texture], [Mesh], etc) are high level abstractions of resources stored in a server, so this function will return the original RID.
+				Returns the RID of the resource (or an empty RID). Many resources (such as [Texture], [Mesh], etc) are high level abstractions of resources stored in a server, so this function will return the original RID.
 			</description>
 		</method>
 		<method name="setup_local_to_scene">
@@ -50,7 +52,7 @@
 			<argument index="0" name="path" type="String">
 			</argument>
 			<description>
-				Set the path of the resource. Differs from set_path(), if another [code]Resource[/code] exists with "path" it over-takes it, instead of failing.
+				Sets the path of the resource. Differs from [code]set_path()[/code], if another [code]Resource[/code] exists with "path" it over-takes it, instead of failing.
 			</description>
 		</method>
 	</methods>
@@ -58,8 +60,10 @@
 		<member name="resource_local_to_scene" type="bool" setter="set_local_to_scene" getter="is_local_to_scene">
 		</member>
 		<member name="resource_name" type="String" setter="set_name" getter="get_name">
+			The name of the resource. This is an optional identifier.
 		</member>
 		<member name="resource_path" type="String" setter="set_path" getter="get_path">
+			The path to the resource. In case it has its own file, it will return its filepath. If it's tied to the scene, it will return the scene's path, followed by the resource's index.
 		</member>
 	</members>
 	<signals>
diff --git a/doc/classes/Skeleton2D.xml b/doc/classes/Skeleton2D.xml
index 712b9ca2a5..d40b8a2fc7 100644
--- a/doc/classes/Skeleton2D.xml
+++ b/doc/classes/Skeleton2D.xml
@@ -30,6 +30,12 @@
 			</description>
 		</method>
 	</methods>
+	<signals>
+		<signal name="bone_setup_changed">
+			<description>
+			</description>
+		</signal>
+	</signals>
 	<constants>
 	</constants>
 </class>
diff --git a/doc/classes/TabContainer.xml b/doc/classes/TabContainer.xml
index 04285b62df..3c5bc25def 100644
--- a/doc/classes/TabContainer.xml
+++ b/doc/classes/TabContainer.xml
@@ -216,6 +216,8 @@
 		</theme_item>
 		<theme_item name="tab_bg" type="StyleBox">
 		</theme_item>
+		<theme_item name="tab_disabled" type="StyleBox">
+		</theme_item>
 		<theme_item name="tab_fg" type="StyleBox">
 		</theme_item>
 		<theme_item name="top_margin" type="int">
diff --git a/doc/classes/Tabs.xml b/doc/classes/Tabs.xml
index de57250d8b..b22d9d73da 100644
--- a/doc/classes/Tabs.xml
+++ b/doc/classes/Tabs.xml
@@ -279,6 +279,8 @@
 		</theme_item>
 		<theme_item name="tab_bg" type="StyleBox">
 		</theme_item>
+		<theme_item name="tab_disabled" type="StyleBox">
+		</theme_item>
 		<theme_item name="tab_fg" type="StyleBox">
 		</theme_item>
 		<theme_item name="top_margin" type="int">