21 files changed, 213 insertions, 177 deletions
diff --git a/doc/classes/AABB.xml b/doc/classes/AABB.xml
index 3f2f27d121..ae80abc5d2 100644
--- a/doc/classes/AABB.xml
+++ b/doc/classes/AABB.xml
@@ -18,7 +18,14 @@
 			<argument index="1" name="size" type="Vector3">
 			</argument>
 			<description>
-				Optional constructor, accepts position and size.
+				Constructs an [AABB] from a position and size.
+			</description>
+		</method>
+		<method name="abs">
+			<return type="AABB">
+			</return>
+			<description>
+				Returns an AABB with equivalent position and size, modified so that the most-negative corner is the origin and the size is positive.
 			</description>
 		</method>
 		<method name="encloses">
@@ -197,13 +204,14 @@
 	</methods>
 	<members>
 		<member name="end" type="Vector3" setter="" getter="" default="Vector3( 0, 0, 0 )">
-			Ending corner. This is calculated as [code]position + size[/code]. Changing this property changes [member size] accordingly.
+			Ending corner. This is calculated as [code]position + size[/code]. Setting this value will change the size.
 		</member>
 		<member name="position" type="Vector3" setter="" getter="" default="Vector3( 0, 0, 0 )">
-			Beginning corner.
+			Beginning corner. Typically has values lower than [member end].
 		</member>
 		<member name="size" type="Vector3" setter="" getter="" default="Vector3( 0, 0, 0 )">
-			Size from position to end.
+			Size from [member position] to [member end]. Typically all components are positive.
+			If the size is negative, you can use [method abs] to fix it.
 		</member>
 	</members>
 	<constants>
diff --git a/doc/classes/AESContext.xml b/doc/classes/AESContext.xml
index ab4d0e0bc3..ff433370bd 100644
--- a/doc/classes/AESContext.xml
+++ b/doc/classes/AESContext.xml
@@ -51,7 +51,7 @@
 			<return type="PackedByteArray">
 			</return>
 			<description>
-				Get the current IV state for this context (IV gets updated when calling [method update]). You normally don't need this funciton.
+				Get the current IV state for this context (IV gets updated when calling [method update]). You normally don't need this function.
 				Note: This function only makes sense when the context is started with [constant MODE_CBC_ENCRYPT] or [constant MODE_CBC_DECRYPT].
 			</description>
 		</method>
diff --git a/doc/classes/BaseButton.xml b/doc/classes/BaseButton.xml
index 5e908b0e53..3812b45b13 100644
--- a/doc/classes/BaseButton.xml
+++ b/doc/classes/BaseButton.xml
@@ -13,7 +13,7 @@
 			<return type="void">
 			</return>
 			<description>
-				Called when the button is pressed.
+				Called when the button is pressed. If you need to know the button's pressed state (and [member toggle_mode] is active), use [method _toggled] instead.
 			</description>
 		</method>
 		<method name="_toggled" qualifiers="virtual">
@@ -89,6 +89,7 @@
 		<signal name="pressed">
 			<description>
 				Emitted when the button is toggled or pressed. This is on [signal button_down] if [member action_mode] is [constant ACTION_MODE_BUTTON_PRESS] and on [signal button_up] otherwise.
+				If you need to know the button's pressed state (and [member toggle_mode] is active), use [signal toggled] instead.
 			</description>
 		</signal>
 		<signal name="toggled">
diff --git a/doc/classes/Basis.xml b/doc/classes/Basis.xml
index 3952ea2d27..47433d7adc 100644
--- a/doc/classes/Basis.xml
+++ b/doc/classes/Basis.xml
@@ -4,10 +4,13 @@
 		3×3 matrix datatype.
 	</brief_description>
 	<description>
-		3×3 matrix used for 3D rotation and scale. Contains 3 vector fields X, Y and Z as its columns, which can be interpreted as the local basis vectors of a transformation. Can also be accessed as array of 3D vectors. These vectors are orthogonal to each other, but are not necessarily normalized (due to scaling). Almost always used as an orthogonal basis for a [Transform].
-		For such use, it is composed of a scaling and a rotation matrix, in that order (M = R.S).
+		3×3 matrix used for 3D rotation and scale. Almost always used as an orthogonal basis for a Transform.
+		Contains 3 vector fields X, Y and Z as its columns, which are typically interpreted as the local basis vectors of a transformation. For such use, it is composed of a scaling and a rotation matrix, in that order (M = R.S).
+		Can also be accessed as array of 3D vectors. These vectors are normally orthogonal to each other, but are not necessarily normalized (due to scaling).
+		For more information, read the "Matrices and transforms" documentation article.
 	</description>
 	<tutorials>
+		<link>https://docs.godotengine.org/en/latest/tutorials/math/matrices_and_transforms.html</link>
 		<link>https://docs.godotengine.org/en/latest/tutorials/3d/using_transforms.html</link>
 	</tutorials>
 	<methods>
@@ -17,7 +20,7 @@
 			<argument index="0" name="from" type="Quat">
 			</argument>
 			<description>
-				Create a rotation matrix from the given quaternion.
+				Constructs a pure rotation basis matrix from the given quaternion.
 			</description>
 		</method>
 		<method name="Basis">
@@ -26,7 +29,8 @@
 			<argument index="0" name="from" type="Vector3">
 			</argument>
 			<description>
-				Create a rotation matrix (in the YXZ convention: first Z, then X, and Y last) from the specified Euler angles, given in the vector format as (X angle, Y angle, Z angle).
+				Constructs a pure rotation basis matrix from the given Euler angles (in the YXZ convention: when *composing*, first Y, then X, and Z last), given in the vector format as (X angle, Y angle, Z angle).
+				Consider using the [Quat] constructor instead, which uses a quaternion instead of Euler angles.
 			</description>
 		</method>
 		<method name="Basis">
@@ -37,7 +41,7 @@
 			<argument index="1" name="phi" type="float">
 			</argument>
 			<description>
-				Create a rotation matrix which rotates around the given axis by the specified angle, in radians. The axis must be a normalized vector.
+				Constructs a pure rotation basis matrix, rotated around the given [code]axis[/code] by [code]phi[/code], in radians. The axis must be a normalized vector.
 			</description>
 		</method>
 		<method name="Basis">
@@ -50,28 +54,30 @@
 			<argument index="2" name="z_axis" type="Vector3">
 			</argument>
 			<description>
-				Create a matrix from 3 axis vectors.
+				Constructs a basis matrix from 3 axis vectors (matrix columns).
 			</description>
 		</method>
 		<method name="determinant">
 			<return type="float">
 			</return>
 			<description>
-				Returns the determinant of the matrix.
+				Returns the determinant of the basis matrix. If the basis is uniformly scaled, its determinant is the square of the scale.
+				A negative determinant means the basis has a negative scale. A zero determinant means the basis isn't invertible, and is usually considered invalid.
 			</description>
 		</method>
 		<method name="get_euler">
 			<return type="Vector3">
 			</return>
 			<description>
-				Returns the basis's rotation in the form of Euler angles (in the YXZ convention: first Z, then X, and Y last). The returned vector contains the rotation angles in the format (X angle, Y angle, Z angle). See [method get_rotation_quat] if you need a quaternion instead.
+				Returns the basis's rotation in the form of Euler angles (in the YXZ convention: when decomposing, first Z, then X, and Y last). The returned vector contains the rotation angles in the format (X angle, Y angle, Z angle).
+				Consider using the [method get_rotation_quat] method instead, which returns a [Quat] quaternion instead of Euler angles.
 			</description>
 		</method>
 		<method name="get_orthogonal_index">
 			<return type="int">
 			</return>
 			<description>
-				This function considers a discretization of rotations into 24 points on unit sphere, lying along the vectors (x,y,z) with each component being either -1, 0, or 1, and returns the index of the point best representing the orientation of the object. It is mainly used by the grid map editor. For further details, refer to the Godot source code.
+				This function considers a discretization of rotations into 24 points on unit sphere, lying along the vectors (x,y,z) with each component being either -1, 0, or 1, and returns the index of the point best representing the orientation of the object. It is mainly used by the [GridMap] editor. For further details, refer to the Godot source code.
 			</description>
 		</method>
 		<method name="get_rotation_quat">
@@ -193,25 +199,26 @@
 			<argument index="0" name="v" type="Vector3">
 			</argument>
 			<description>
-				Returns a vector transformed (multiplied) by the transposed matrix.
+				Returns a vector transformed (multiplied) by the transposed basis matrix.
 				[b]Note:[/b] This results in a multiplication by the inverse of the matrix only if it represents a rotation-reflection.
 			</description>
 		</method>
 	</methods>
 	<members>
 		<member name="x" type="Vector3" setter="" getter="" default="Vector3( 1, 0, 0 )">
-			The basis matrix's X vector.
+			The basis matrix's X vector (column 0). Equivalent to array index [code]0[/code].
 		</member>
 		<member name="y" type="Vector3" setter="" getter="" default="Vector3( 0, 1, 0 )">
-			The basis matrix's Y vector.
+			The basis matrix's Y vector (column 1). Equivalent to array index [code]1[/code].
 		</member>
 		<member name="z" type="Vector3" setter="" getter="" default="Vector3( 0, 0, 1 )">
-			The basis matrix's Z vector.
+			The basis matrix's Z vector (column 2). Equivalent to array index [code]2[/code].
 		</member>
 	</members>
 	<constants>
 		<constant name="IDENTITY" value="Basis( 1, 0, 0, 0, 1, 0, 0, 0, 1 )">
-			The identity basis. This is identical to calling [code]Basis()[/code] without any parameters. This constant can be used to make your code clearer.
+			The identity basis, with no rotation or scaling applied.
+			This is identical to calling [code]Basis()[/code] without any parameters. This constant can be used to make your code clearer, and for consistency with C#.
 		</constant>
 		<constant name="FLIP_X" value="Basis( -1, 0, 0, 0, 1, 0, 0, 0, 1 )">
 			The basis that will flip something along the X axis when used in a transformation.
diff --git a/doc/classes/Color.xml b/doc/classes/Color.xml
index 17b474531e..240e70db9f 100644
--- a/doc/classes/Color.xml
+++ b/doc/classes/Color.xml
@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <class name="Color" version="4.0">
 	<brief_description>
-		Color in RGBA format with some support for ARGB format.
+		Color in RGBA format using floats on the range of 0 to 1.
 	</brief_description>
 	<description>
-		A color is represented by red, green, and blue [code](r, g, b)[/code] components. Additionally, [code]a[/code] represents the alpha component, often used for transparency. Values are in floating-point and usually range from 0 to 1. Some properties (such as [member CanvasItem.modulate]) may accept values greater than 1.
+		A color represented by red, green, blue, and alpha (RGBA) components. The alpha component is often used for transparency. Values are in floating-point and usually range from 0 to 1. Some properties (such as CanvasItem.modulate) may accept values greater than 1 (overbright or HDR colors).
 		You can also create a color from standardized color names by using [method @GDScript.ColorN] or directly using the color constants defined here. The standardized color set is based on the [url=https://en.wikipedia.org/wiki/X11_color_names]X11 color names[/url].
 		If you want to supply values in a range of 0 to 255, you should use [method @GDScript.Color8].
 		[b]Note:[/b] In a boolean context, a Color will evaluate to [code]false[/code] if it's equal to [code]Color(0, 0, 0, 1)[/code] (opaque black). Otherwise, a Color will always evaluate to [code]true[/code].
@@ -277,37 +277,37 @@
 	</methods>
 	<members>
 		<member name="a" type="float" setter="" getter="" default="1.0">
-			Alpha value (range 0 to 1).
+			The color's alpha (transparency) component, typically on the range of 0 to 1.
 		</member>
 		<member name="a8" type="int" setter="" getter="" default="255">
-			Alpha value (range 0 to 255).
+			Wrapper for [member a] that uses the range 0 to 255 instead of 0 to 1.
 		</member>
 		<member name="b" type="float" setter="" getter="" default="0.0">
-			Blue value (range 0 to 1).
+			The color's blue component, typically on the range of 0 to 1.
 		</member>
 		<member name="b8" type="int" setter="" getter="" default="0">
-			Blue value (range 0 to 255).
+			Wrapper for [member b] that uses the range 0 to 255 instead of 0 to 1.
 		</member>
 		<member name="g" type="float" setter="" getter="" default="0.0">
-			Green value (range 0 to 1).
+			The color's green component, typically on the range of 0 to 1.
 		</member>
 		<member name="g8" type="int" setter="" getter="" default="0">
-			Green value (range 0 to 255).
+			Wrapper for [member g] that uses the range 0 to 255 instead of 0 to 1.
 		</member>
 		<member name="h" type="float" setter="" getter="" default="0.0">
-			HSV hue value (range 0 to 1).
+			The HSV hue of this color, on the range 0 to 1.
 		</member>
 		<member name="r" type="float" setter="" getter="" default="0.0">
-			Red value (range 0 to 1).
+			The color's red component, typically on the range of 0 to 1.
 		</member>
 		<member name="r8" type="int" setter="" getter="" default="0">
-			Red value (range 0 to 255).
+			Wrapper for [member r] that uses the range 0 to 255 instead of 0 to 1.
 		</member>
 		<member name="s" type="float" setter="" getter="" default="0.0">
-			HSV saturation value (range 0 to 1).
+			The HSV saturation of this color, on the range 0 to 1.
 		</member>
 		<member name="v" type="float" setter="" getter="" default="0.0">
-			HSV value (range 0 to 1).
+			The HSV value (brightness) of this color, on the range 0 to 1.
 		</member>
 	</members>
 	<constants>
diff --git a/doc/classes/OS.xml b/doc/classes/OS.xml
index 238bc970ef..5b4b5d02fb 100644
--- a/doc/classes/OS.xml
+++ b/doc/classes/OS.xml
@@ -516,7 +516,7 @@
 			The amount of sleeping between frames when the low-processor usage mode is enabled (in microseconds). Higher values will result in lower CPU usage.
 		</member>
 		<member name="tablet_driver" type="String" setter="set_current_tablet_driver" getter="get_current_tablet_driver" default="&quot;&quot;">
-			The current tablet drvier in use.
+			The current tablet driver in use.
 		</member>
 	</members>
 	<constants>
diff --git a/doc/classes/Plane.xml b/doc/classes/Plane.xml
index 292acd8b5d..ce0680523c 100644
--- a/doc/classes/Plane.xml
+++ b/doc/classes/Plane.xml
@@ -65,13 +65,6 @@
 				Returns the shortest distance from the plane to the position [code]point[/code].
 			</description>
 		</method>
-		<method name="get_any_point">
-			<return type="Vector3">
-			</return>
-			<description>
-				Returns a point on the plane.
-			</description>
-		</method>
 		<method name="has_point">
 			<return type="bool">
 			</return>
@@ -80,7 +73,7 @@
 			<argument index="1" name="epsilon" type="float" default="1e-05">
 			</argument>
 			<description>
-				Returns [code]true[/code] if [code]point[/code] is inside the plane (by a very minimum [code]epsilon[/code] threshold).
+				Returns [code]true[/code] if [code]point[/code] is inside the plane. Comparison uses a custom minimum [code]epsilon[/code] threshold.
 			</description>
 		</method>
 		<method name="intersect_3">
@@ -147,36 +140,38 @@
 			<argument index="0" name="point" type="Vector3">
 			</argument>
 			<description>
-				Returns the orthogonal projection of point [code]p[/code] into a point in the plane.
+				Returns the orthogonal projection of [code]point[/code] into a point in the plane.
 			</description>
 		</method>
 	</methods>
 	<members>
 		<member name="d" type="float" setter="" getter="" default="0.0">
-			Distance from the origin to the plane, in the direction of [member normal].
+			The distance from the origin to the plane, in the direction of [member normal]. This value is typically non-negative.
+			In the scalar equation of the plane [code]ax + by + cz = d[/code], this is [code]d[/code], while the [code](a, b, c)[/code] coordinates are represented by the [member normal] property.
 		</member>
 		<member name="normal" type="Vector3" setter="" getter="" default="Vector3( 0, 0, 0 )">
-			The normal of the plane. "Over" or "Above" the plane is considered the side of the plane towards where the normal is pointing.
+			The normal of the plane, which must be normalized.
+			In the scalar equation of the plane [code]ax + by + cz = d[/code], this is the vector [code](a, b, c)[/code], where [code]d[/code] is the [member d] property.
 		</member>
 		<member name="x" type="float" setter="" getter="" default="0.0">
-			The [member normal]'s X component.
+			The X component of the plane's [member normal] vector.
 		</member>
 		<member name="y" type="float" setter="" getter="" default="0.0">
-			The [member normal]'s Y component.
+			The Y component of the plane's [member normal] vector.
 		</member>
 		<member name="z" type="float" setter="" getter="" default="0.0">
-			The [member normal]'s Z component.
+			The Z component of the plane's [member normal] vector.
 		</member>
 	</members>
 	<constants>
 		<constant name="PLANE_YZ" value="Plane( 1, 0, 0, 0 )">
-			A plane that extends in the Y and Z axes.
+			A plane that extends in the Y and Z axes (normal vector points +X).
 		</constant>
 		<constant name="PLANE_XZ" value="Plane( 0, 1, 0, 0 )">
-			A plane that extends in the X and Z axes.
+			A plane that extends in the X and Z axes (normal vector points +Y).
 		</constant>
 		<constant name="PLANE_XY" value="Plane( 0, 0, 1, 0 )">
-			A plane that extends in the X and Y axes.
+			A plane that extends in the X and Y axes (normal vector points +Z).
 		</constant>
 	</constants>
 </class>
diff --git a/doc/classes/Quat.xml b/doc/classes/Quat.xml
index 327fa882e5..730edb00d9 100644
--- a/doc/classes/Quat.xml
+++ b/doc/classes/Quat.xml
@@ -4,9 +4,9 @@
 		Quaternion.
 	</brief_description>
 	<description>
-		A unit quaternion used for representing 3D rotations.
-		It is similar to [Basis], which implements matrix representation of rotations, and can be parametrized using both an axis-angle pair or Euler angles. But due to its compactness and the way it is stored in memory, certain operations (obtaining axis-angle and performing SLERP, in particular) are more efficient and robust against floating-point errors.
-		Quaternions need to be (re)normalized.
+		A unit quaternion used for representing 3D rotations. Quaternions need to be normalized to be used for rotation.
+		It is similar to Basis, which implements matrix representation of rotations, and can be parametrized using both an axis-angle pair or Euler angles. Basis stores rotation, scale, and shearing, while Quat only stores rotation.
+		Due to its compactness and the way it is stored in memory, certain operations (obtaining axis-angle and performing SLERP, in particular) are more efficient and robust against floating-point errors.
 	</description>
 	<tutorials>
 		<link>https://docs.godotengine.org/en/latest/tutorials/3d/using_transforms.html#interpolating-with-quaternions</link>
@@ -18,7 +18,7 @@
 			<argument index="0" name="from" type="Basis">
 			</argument>
 			<description>
-				Returns the rotation matrix corresponding to the given quaternion.
+				Constructs a quaternion from the given [Basis].
 			</description>
 		</method>
 		<method name="Quat">
@@ -27,7 +27,7 @@
 			<argument index="0" name="euler" type="Vector3">
 			</argument>
 			<description>
-				Returns a quaternion that will perform a rotation specified by Euler angles (in the YXZ convention: first Z, then X, and Y last), given in the vector format as (X angle, Y angle, Z angle).
+				Constructs a quaternion that will perform a rotation specified by Euler angles (in the YXZ convention: when decomposing, first Z, then X, and Y last), given in the vector format as (X angle, Y angle, Z angle).
 			</description>
 		</method>
 		<method name="Quat">
@@ -38,7 +38,7 @@
 			<argument index="1" name="angle" type="float">
 			</argument>
 			<description>
-				Returns a quaternion that will rotate around the given axis by the specified angle. The axis must be a normalized vector.
+				Constructs a quaternion that will rotate around the given axis by the specified angle. The axis must be a normalized vector.
 			</description>
 		</method>
 		<method name="Quat">
@@ -53,7 +53,7 @@
 			<argument index="3" name="w" type="float">
 			</argument>
 			<description>
-				Returns a quaternion defined by these values.
+				Constructs a quaternion defined by the given values.
 			</description>
 		</method>
 		<method name="cubic_slerp">
@@ -68,7 +68,7 @@
 			<argument index="3" name="t" type="float">
 			</argument>
 			<description>
-				Performs a cubic spherical-linear interpolation with another quaternion.
+				Performs a cubic spherical interpolation between quaternions [code]preA[/code], this vector, [code]b[/code], and [code]postB[/code], by the given amount [code]t[/code].
 			</description>
 		</method>
 		<method name="dot">
@@ -84,7 +84,7 @@
 			<return type="Vector3">
 			</return>
 			<description>
-				Returns Euler angles (in the YXZ convention: first Z, then X, and Y last) corresponding to the rotation represented by the unit quaternion. Returned vector contains the rotation angles in the format (X angle, Y angle, Z angle).
+				Returns Euler angles (in the YXZ convention: when decomposing, first Z, then X, and Y last) corresponding to the rotation represented by the unit quaternion. Returned vector contains the rotation angles in the format (X angle, Y angle, Z angle).
 			</description>
 		</method>
 		<method name="inverse">
@@ -148,7 +148,7 @@
 			<argument index="0" name="euler" type="Vector3">
 			</argument>
 			<description>
-				Sets the quaternion to a rotation specified by Euler angles (in the YXZ convention: first Z, then X, and Y last), given in the vector format as (X angle, Y angle, Z angle).
+				Sets the quaternion to a rotation specified by Euler angles (in the YXZ convention: when decomposing, first Z, then X, and Y last), given in the vector format as (X angle, Y angle, Z angle).
 			</description>
 		</method>
 		<method name="slerp">
@@ -159,7 +159,8 @@
 			<argument index="1" name="t" type="float">
 			</argument>
 			<description>
-				Performs a spherical-linear interpolation with another quaternion.
+				Returns the result of the spherical linear interpolation between this quaternion and [code]to[/code] by amount [code]weight[/code].
+				[b]Note:[/b] Both quaternions must be normalized.
 			</description>
 		</method>
 		<method name="slerpni">
@@ -170,7 +171,7 @@
 			<argument index="1" name="t" type="float">
 			</argument>
 			<description>
-				Performs a spherical-linear interpolation with another quaterion without checking if the rotation path is not bigger than 90°.
+				Returns the result of the spherical linear interpolation between this quaternion and [code]to[/code] by amount [code]weight[/code], but without checking if the rotation path is not bigger than 90 degrees.
 			</description>
 		</method>
 		<method name="xform">
@@ -179,27 +180,31 @@
 			<argument index="0" name="v" type="Vector3">
 			</argument>
 			<description>
-				Transforms the vector [code]v[/code] by this quaternion.
+				Returns a vector transformed (multiplied) by this quaternion.
 			</description>
 		</method>
 	</methods>
 	<members>
 		<member name="w" type="float" setter="" getter="" default="1.0">
-			W component of the quaternion.
+			W component of the quaternion (real part).
+			Quaternion components should usually not be manipulated directly.
 		</member>
 		<member name="x" type="float" setter="" getter="" default="0.0">
-			X component of the quaternion.
+			X component of the quaternion (imaginary [code]i[/code] axis part).
+			Quaternion components should usually not be manipulated directly.
 		</member>
 		<member name="y" type="float" setter="" getter="" default="0.0">
-			Y component of the quaternion.
+			Y component of the quaternion (imaginary [code]j[/code] axis part).
+			Quaternion components should usually not be manipulated directly.
 		</member>
 		<member name="z" type="float" setter="" getter="" default="0.0">
-			Z component of the quaternion.
+			Z component of the quaternion (imaginary [code]k[/code] axis part).
+			Quaternion components should usually not be manipulated directly.
 		</member>
 	</members>
 	<constants>
 		<constant name="IDENTITY" value="Quat( 0, 0, 0, 1 )">
-			The identity rotation. Equivalent to an identity matrix. If a vector is transformed by an identity quaternion, it will not change.
+			The identity quaternion, representing no rotation. Equivalent to an identity [Basis] matrix. If a vector is transformed by an identity quaternion, it will not change.
 		</constant>
 	</constants>
 </class>
diff --git a/doc/classes/Rect2.xml b/doc/classes/Rect2.xml
index dbf461cdf1..8599aad95e 100644
--- a/doc/classes/Rect2.xml
+++ b/doc/classes/Rect2.xml
@@ -171,13 +171,14 @@
 	</methods>
 	<members>
 		<member name="end" type="Vector2" setter="" getter="" default="Vector2( 0, 0 )">
-			Ending corner.
+			Ending corner. This is calculated as [code]position + size[/code]. Setting this value will change the size.
 		</member>
 		<member name="position" type="Vector2" setter="" getter="" default="Vector2( 0, 0 )">
-			Position (starting corner).
+			Beginning corner. Typically has values lower than [member end].
 		</member>
 		<member name="size" type="Vector2" setter="" getter="" default="Vector2( 0, 0 )">
-			Size from position to end.
+			Size from [member position] to [member end]. Typically all components are positive.
+			If the size is negative, you can use [method abs] to fix it.
 		</member>
 	</members>
 	<constants>
diff --git a/doc/classes/Rect2i.xml b/doc/classes/Rect2i.xml
index f3a7ba0476..7362580c02 100644
--- a/doc/classes/Rect2i.xml
+++ b/doc/classes/Rect2i.xml
@@ -160,13 +160,14 @@
 	</methods>
 	<members>
 		<member name="end" type="Vector2i" setter="" getter="" default="Vector2i( 0, 0 )">
-			Ending corner.
+			Ending corner. This is calculated as [code]position + size[/code]. Setting this value will change the size.
 		</member>
 		<member name="position" type="Vector2i" setter="" getter="" default="Vector2i( 0, 0 )">
-			Position (starting corner).
+			Beginning corner. Typically has values lower than [member end].
 		</member>
 		<member name="size" type="Vector2i" setter="" getter="" default="Vector2i( 0, 0 )">
-			Size from position to end.
+			Size from [member position] to [member end]. Typically all components are positive.
+			If the size is negative, you can use [method abs] to fix it.
 		</member>
 	</members>
 	<constants>
diff --git a/doc/classes/RigidBody3D.xml b/doc/classes/RigidBody3D.xml
index efd55f5566..370e6bd19c 100644
--- a/doc/classes/RigidBody3D.xml
+++ b/doc/classes/RigidBody3D.xml
@@ -100,6 +100,13 @@
 				[b]Note:[/b] The result of this test is not immediate after moving objects. For performance, list of collisions is updated once per frame and before the physics step. Consider using signals instead.
 			</description>
 		</method>
+		<method name="get_inverse_inertia_tensor">
+			<return type="Basis">
+			</return>
+			<description>
+				Returns the inverse inertia tensor basis. This is used to calculate the angular acceleration resulting from a torque applied to the [RigidBody3D].
+			</description>
+		</method>
 		<method name="set_axis_lock">
 			<return type="void">
 			</return>
diff --git a/doc/classes/Skeleton3D.xml b/doc/classes/Skeleton3D.xml
index 183fd5396f..050d7056af 100644
--- a/doc/classes/Skeleton3D.xml
+++ b/doc/classes/Skeleton3D.xml
@@ -239,7 +239,7 @@
 			</argument>
 			<description>
 				Sets the global pose transform, [code]pose[/code], for the bone at [code]bone_idx[/code].
-				[code]amount[/code] is the interpolation strengh that will be used when applying the pose, and [code]persistent[/code] determines if the applied pose will remain.
+				[code]amount[/code] is the interpolation strength that will be used when applying the pose, and [code]persistent[/code] determines if the applied pose will remain.
 				[b]Note[/b]: The pose transform needs to be in bone space. Use [method world_transform_to_bone_transform] to convert a world transform, like one you can get from a [Node3D], to bone space.
 			</description>
 		</method>
diff --git a/doc/classes/Transform.xml b/doc/classes/Transform.xml
index 4175f01eb4..26c190bfa9 100644
--- a/doc/classes/Transform.xml
+++ b/doc/classes/Transform.xml
@@ -4,10 +4,12 @@
 		3D transformation (3×4 matrix).
 	</brief_description>
 	<description>
-		Represents one or many transformations in 3D space such as translation, rotation, or scaling. It consists of a [member basis] and an [member origin]. It is similar to a 3×4 matrix.
+		3×4 matrix (3 rows, 4 columns) used for 3D linear transformations. It can represent transformations such as translation, rotation, or scaling. It consists of a [member basis] (first 3 columns) and a [Vector3] for the [member origin] (last column).
+		For more information, read the "Matrices and transforms" documentation article.
 	</description>
 	<tutorials>
 		<link>https://docs.godotengine.org/en/latest/tutorials/math/index.html</link>
+		<link>https://docs.godotengine.org/en/latest/tutorials/math/matrices_and_transforms.html</link>
 		<link>https://docs.godotengine.org/en/latest/tutorials/3d/using_transforms.html</link>
 	</tutorials>
 	<methods>
@@ -23,7 +25,7 @@
 			<argument index="3" name="origin" type="Vector3">
 			</argument>
 			<description>
-				Constructs the Transform from four [Vector3]. Each axis corresponds to local basis vectors (some of which may be scaled).
+				Constructs a Transform from four [Vector3] values (matrix columns). Each axis corresponds to local basis vectors (some of which may be scaled).
 			</description>
 		</method>
 		<method name="Transform">
@@ -34,7 +36,7 @@
 			<argument index="1" name="origin" type="Vector3">
 			</argument>
 			<description>
-				Constructs the Transform from a [Basis] and [Vector3].
+				Constructs a Transform from a [Basis] and [Vector3].
 			</description>
 		</method>
 		<method name="Transform">
@@ -43,7 +45,7 @@
 			<argument index="0" name="from" type="Transform2D">
 			</argument>
 			<description>
-				Constructs the Transform from a [Transform2D].
+				Constructs a Transform from a [Transform2D].
 			</description>
 		</method>
 		<method name="Transform">
@@ -52,7 +54,7 @@
 			<argument index="0" name="from" type="Quat">
 			</argument>
 			<description>
-				Constructs the Transform from a [Quat]. The origin will be Vector3(0, 0, 0).
+				Constructs a Transform from a [Quat]. The origin will be [code]Vector3(0, 0, 0)[/code].
 			</description>
 		</method>
 		<method name="Transform">
@@ -79,7 +81,7 @@
 			<argument index="1" name="weight" type="float">
 			</argument>
 			<description>
-				Interpolates the transform to other Transform by weight amount (0-1).
+				Interpolates the transform to other Transform by weight amount (on the range of 0.0 to 1.0).
 			</description>
 		</method>
 		<method name="inverse">
@@ -172,7 +174,7 @@
 			The basis is a matrix containing 3 [Vector3] as its columns: X axis, Y axis, and Z axis. These vectors can be interpreted as the basis vectors of local coordinate system traveling with the object.
 		</member>
 		<member name="origin" type="Vector3" setter="" getter="" default="Vector3( 0, 0, 0 )">
-			The translation offset of the transform.
+			The translation offset of the transform (column 3, the fourth column). Equivalent to array index [code]3[/code].
 		</member>
 	</members>
 	<constants>
diff --git a/doc/classes/Transform2D.xml b/doc/classes/Transform2D.xml
index af93d4c654..f630df7afe 100644
--- a/doc/classes/Transform2D.xml
+++ b/doc/classes/Transform2D.xml
@@ -1,12 +1,14 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <class name="Transform2D" version="4.0">
 	<brief_description>
-		2D transformation (3×2 matrix).
+		2D transformation (2×3 matrix).
 	</brief_description>
 	<description>
-		Represents one or many transformations in 2D space such as translation, rotation, or scaling. It consists of two [member x] and [member y] [Vector2]s and an [member origin]. It is similar to a 3×2 matrix.
+		2×3 matrix (2 rows, 3 columns) used for 2D linear transformations. It can represent transformations such as translation, rotation, or scaling. It consists of a three [Vector2] values: [member x], [member y], and the [member origin].
+		For more information, read the "Matrices and transforms" documentation article.
 	</description>
 	<tutorials>
+		<link>https://docs.godotengine.org/en/latest/tutorials/math/matrices_and_transforms.html</link>
 	</tutorials>
 	<methods>
 		<method name="Transform2D">
@@ -28,7 +30,7 @@
 			<argument index="2" name="origin" type="Vector2">
 			</argument>
 			<description>
-				Constructs the transform from 3 [Vector2]s representing x, y, and origin.
+				Constructs the transform from 3 [Vector2] values representing [member x], [member y], and the [member origin] (the three column vectors).
 			</description>
 		</method>
 		<method name="Transform2D">
@@ -46,7 +48,7 @@
 			<return type="Transform2D">
 			</return>
 			<description>
-				Returns the inverse of the matrix.
+				Returns the inverse of the transform, under the assumption that the transformation is composed of rotation, scaling and translation.
 			</description>
 		</method>
 		<method name="basis_xform">
@@ -55,7 +57,8 @@
 			<argument index="0" name="v" type="Vector2">
 			</argument>
 			<description>
-				Transforms the given vector by this transform's basis (no translation).
+				Returns a vector transformed (multiplied) by the basis matrix.
+				This method does not account for translation (the origin vector).
 			</description>
 		</method>
 		<method name="basis_xform_inv">
@@ -64,7 +67,8 @@
 			<argument index="0" name="v" type="Vector2">
 			</argument>
 			<description>
-				Inverse-transforms the given vector by this transform's basis (no translation).
+				Returns a vector transformed (multiplied) by the inverse basis matrix.
+				This method does not account for translation (the origin vector).
 			</description>
 		</method>
 		<method name="get_origin">
@@ -96,14 +100,14 @@
 			<argument index="1" name="weight" type="float">
 			</argument>
 			<description>
-				Returns a transform interpolated between this transform and another by a given weight (0-1).
+				Returns a transform interpolated between this transform and another by a given weight (on the range of 0.0 to 1.0).
 			</description>
 		</method>
 		<method name="inverse">
 			<return type="Transform2D">
 			</return>
 			<description>
-				Returns the inverse of the transform, under the assumption that the transformation is composed of rotation and translation (no scaling, use affine_inverse for transforms with scaling).
+				Returns the inverse of the transform, under the assumption that the transformation is composed of rotation and translation (no scaling, use [method affine_inverse] for transforms with scaling).
 			</description>
 		</method>
 		<method name="is_equal_approx">
@@ -119,7 +123,7 @@
 			<return type="Transform2D">
 			</return>
 			<description>
-				Returns the transform with the basis orthogonal (90 degrees), and normalized axis vectors.
+				Returns the transform with the basis orthogonal (90 degrees), and normalized axis vectors (scale of 1 or -1).
 			</description>
 		</method>
 		<method name="rotated">
@@ -171,24 +175,24 @@
 	</methods>
 	<members>
 		<member name="origin" type="Vector2" setter="" getter="" default="Vector2( 0, 0 )">
-			The transform's translation offset.
+			The origin vector (column 2, the third column). Equivalent to array index [code]2[/code]. The origin vector represents translation.
 		</member>
 		<member name="x" type="Vector2" setter="" getter="" default="Vector2( 1, 0 )">
-			The X axis of 2×2 basis matrix containing 2 [Vector2]s as its columns: X axis and Y axis. These vectors can be interpreted as the basis vectors of local coordinate system traveling with the object.
+			The basis matrix's X vector (column 0). Equivalent to array index [code]0[/code].
 		</member>
 		<member name="y" type="Vector2" setter="" getter="" default="Vector2( 0, 1 )">
-			The Y axis of 2×2 basis matrix containing 2 [Vector2]s as its columns: X axis and Y axis. These vectors can be interpreted as the basis vectors of local coordinate system traveling with the object.
+			The basis matrix's Y vector (column 1). Equivalent to array index [code]1[/code].
 		</member>
 	</members>
 	<constants>
 		<constant name="IDENTITY" value="Transform2D( 1, 0, 0, 1, 0, 0 )">
-			[Transform2D] with no translation, rotation or scaling applied. When applied to other data structures, [constant IDENTITY] performs no transformation.
+			The identity [Transform2D] with no translation, rotation or scaling applied. When applied to other data structures, [constant IDENTITY] performs no transformation.
 		</constant>
 		<constant name="FLIP_X" value="Transform2D( -1, 0, 0, 1, 0, 0 )">
-			[Transform2D] with mirroring applied parallel to the X axis.
+			The [Transform2D] that will flip something along the X axis.
 		</constant>
 		<constant name="FLIP_Y" value="Transform2D( 1, 0, 0, -1, 0, 0 )">
-			[Transform2D] with mirroring applied parallel to the Y axis.
+			The [Transform2D] that will flip something along the Y axis.
 		</constant>
 	</constants>
 </class>
diff --git a/doc/classes/Vector2.xml b/doc/classes/Vector2.xml
index c97f99cfaa..c0d8628d88 100644
--- a/doc/classes/Vector2.xml
+++ b/doc/classes/Vector2.xml
@@ -43,7 +43,7 @@
 			<return type="float">
 			</return>
 			<description>
-				Returns the vector's angle in radians with respect to the X axis, or [code](1, 0)[/code] vector.
+				Returns this vector's angle with respect to the X axis, or [code](1, 0)[/code] vector, in radians.
 				Equivalent to the result of [method @GDScript.atan2] when called with the vector's [member y] and [member x] as parameters: [code]atan2(y, x)[/code].
 			</description>
 		</method>
@@ -53,7 +53,7 @@
 			<argument index="0" name="to" type="Vector2">
 			</argument>
 			<description>
-				Returns the angle in radians between the two vectors.
+				Returns the angle to the given vector, in radians.
 			</description>
 		</method>
 		<method name="angle_to_point">
@@ -62,14 +62,14 @@
 			<argument index="0" name="to" type="Vector2">
 			</argument>
 			<description>
-				Returns the angle in radians between the line connecting the two points and the X coordinate.
+				Returns the angle between the line connecting the two points and the X axis, in radians.
 			</description>
 		</method>
 		<method name="aspect">
 			<return type="float">
 			</return>
 			<description>
-				Returns the ratio of [member x] to [member y].
+				Returns the aspect ratio of this vector, the ratio of [member x] to [member y].
 			</description>
 		</method>
 		<method name="bounce">
@@ -85,7 +85,7 @@
 			<return type="Vector2">
 			</return>
 			<description>
-				Returns the vector with all components rounded up.
+				Returns the vector with all components rounded up (towards positive infinity).
 			</description>
 		</method>
 		<method name="clamped">
@@ -94,7 +94,7 @@
 			<argument index="0" name="length" type="float">
 			</argument>
 			<description>
-				Returns the vector with a maximum length.
+				Returns the vector with a maximum length by limiting its length to [code]length[/code].
 			</description>
 		</method>
 		<method name="cross">
@@ -103,7 +103,7 @@
 			<argument index="0" name="with" type="Vector2">
 			</argument>
 			<description>
-				Returns the 2-dimensional analog of the cross product with the given vector.
+				Returns the cross product of this vector and [code]with[/code].
 			</description>
 		</method>
 		<method name="cubic_interpolate">
@@ -118,7 +118,7 @@
 			<argument index="3" name="t" type="float">
 			</argument>
 			<description>
-				Cubically interpolates between this vector and [code]b[/code] using [code]pre_a[/code] and [code]post_b[/code] as handles, and returns the result at position [code]t[/code]. [code]t[/code] is in the range of [code]0.0 - 1.0[/code], representing the amount of interpolation.
+				Cubically interpolates between this vector and [code]b[/code] using [code]pre_a[/code] and [code]post_b[/code] as handles, and returns the result at position [code]t[/code]. [code]t[/code] is on the range of 0.0 to 1.0, representing the amount of interpolation.
 			</description>
 		</method>
 		<method name="direction_to">
@@ -136,7 +136,8 @@
 			<argument index="0" name="to" type="Vector2">
 			</argument>
 			<description>
-				Returns the squared distance to vector [code]b[/code]. Prefer this function over [method distance_to] if you need to sort vectors or need the squared distance for some formula.
+				Returns the squared distance between this vector and [code]b[/code].
+				This method runs faster than [method distance_to], so prefer it if you need to compare vectors or need the squared distance for some formula.
 			</description>
 		</method>
 		<method name="distance_to">
@@ -145,7 +146,7 @@
 			<argument index="0" name="to" type="Vector2">
 			</argument>
 			<description>
-				Returns the distance to vector [code]b[/code].
+				Returns the distance between this vector and [code]to[/code].
 			</description>
 		</method>
 		<method name="dot">
@@ -154,7 +155,7 @@
 			<argument index="0" name="with" type="Vector2">
 			</argument>
 			<description>
-				Returns the dot product with vector [code]b[/code]. This can be used to compare the angle between two vectors. For example, this can be used to determine whether an enemy is facing the player.
+				Returns the dot product of this vector and [code]with[/code]. This can be used to compare the angle between two vectors. For example, this can be used to determine whether an enemy is facing the player.
 				The dot product will be [code]0[/code] for a straight angle (90 degrees), greater than 0 for angles narrower than 90 degrees and lower than 0 for angles wider than 90 degrees.
 				When using unit (normalized) vectors, the result will always be between [code]-1.0[/code] (180 degree angle) when the vectors are facing opposite directions, and [code]1.0[/code] (0 degree angle) when the vectors are aligned.
 				[b]Note:[/b] [code]a.dot(b)[/code] is equivalent to [code]b.dot(a)[/code].
@@ -164,7 +165,7 @@
 			<return type="Vector2">
 			</return>
 			<description>
-				Returns the vector with all components rounded down.
+				Returns the vector with all components rounded down (towards negative infinity).
 			</description>
 		</method>
 		<method name="is_equal_approx">
@@ -180,21 +181,22 @@
 			<return type="bool">
 			</return>
 			<description>
-				Returns [code]true[/code] if the vector is normalized.
+				Returns [code]true[/code] if the vector is normalized, and false otherwise.
 			</description>
 		</method>
 		<method name="length">
 			<return type="float">
 			</return>
 			<description>
-				Returns the vector's length.
+				Returns the length (magnitude) of this vector.
 			</description>
 		</method>
 		<method name="length_squared">
 			<return type="float">
 			</return>
 			<description>
-				Returns the vector's length squared. Prefer this method over [method length] if you need to sort vectors or need the squared length for some formula.
+				Returns the squared length (squared magnitude) of this vector.
+				This method runs faster than [method length], so prefer it if you need to compare vectors or need the squared distance for some formula.
 			</description>
 		</method>
 		<method name="lerp">
@@ -205,7 +207,7 @@
 			<argument index="1" name="t" type="float">
 			</argument>
 			<description>
-				Returns the result of the linear interpolation between this vector and [code]b[/code] by amount [code]t[/code]. [code]t[/code] is in the range of [code]0.0 - 1.0[/code], representing the amount of interpolation.
+				Returns the result of the linear interpolation between this vector and [code]b[/code] by amount [code]t[/code]. [code]t[/code] is on the range of 0.0 to 1.0, representing the amount of interpolation.
 			</description>
 		</method>
 		<method name="move_toward">
@@ -232,7 +234,7 @@
 			<argument index="0" name="mod" type="float">
 			</argument>
 			<description>
-				Returns a vector composed of the [code]fposmod[/code] of this vector's components and [code]mod[/code].
+				Returns a vector composed of the [method @GDScript.fposmod] of this vector's components and [code]mod[/code].
 			</description>
 		</method>
 		<method name="posmodv">
@@ -241,7 +243,7 @@
 			<argument index="0" name="modv" type="Vector2">
 			</argument>
 			<description>
-				Returns a vector composed of the [code]fposmod[/code] of this vector's components and [code]modv[/code]'s components.
+				Returns a vector composed of the [method @GDScript.fposmod] of this vector's components and [code]modv[/code]'s components.
 			</description>
 		</method>
 		<method name="project">
@@ -282,7 +284,7 @@
 			<return type="Vector2">
 			</return>
 			<description>
-				Returns the vector with each component set to one or negative one, depending on the signs of the components.
+				Returns the vector with each component set to one or negative one, depending on the signs of the components, or zero if the component is zero, by calling [method @GDScript.sign] on each component.
 			</description>
 		</method>
 		<method name="slerp">
@@ -293,7 +295,7 @@
 			<argument index="1" name="t" type="float">
 			</argument>
 			<description>
-				Returns the result of spherical linear interpolation between this vector and [code]b[/code], by amount [code]t[/code]. [code]t[/code] is in the range of [code]0.0 - 1.0[/code], representing the amount of interpolation.
+				Returns the result of spherical linear interpolation between this vector and [code]b[/code], by amount [code]t[/code]. [code]t[/code] is on the range of 0.0 to 1.0, representing the amount of interpolation.
 				[b]Note:[/b] Both vectors must be normalized.
 			</description>
 		</method>
@@ -303,7 +305,7 @@
 			<argument index="0" name="n" type="Vector2">
 			</argument>
 			<description>
-				Returns the component of the vector along a plane defined by the given normal.
+				Returns this vector slid along a plane defined by the given normal.
 			</description>
 		</method>
 		<method name="snapped">
@@ -312,14 +314,14 @@
 			<argument index="0" name="by" type="Vector2">
 			</argument>
 			<description>
-				Returns the vector snapped to a grid with the given size.
+				Returns this vector with each component snapped to the nearest multiple of [code]step[/code]. This can also be used to round to an arbitrary number of decimals.
 			</description>
 		</method>
 		<method name="tangent">
 			<return type="Vector2">
 			</return>
 			<description>
-				Returns a perpendicular vector.
+				Returns a perpendicular vector rotated 90 degrees counter-clockwise compared to the original, with the same length.
 			</description>
 		</method>
 	</methods>
@@ -339,25 +341,25 @@
 			Enumerated value for the Y axis.
 		</constant>
 		<constant name="ZERO" value="Vector2( 0, 0 )">
-			Zero vector.
+			Zero vector, a vector with all components set to [code]0[/code].
 		</constant>
 		<constant name="ONE" value="Vector2( 1, 1 )">
-			One vector.
+			One vector, a vector with all components set to [code]1[/code].
 		</constant>
 		<constant name="INF" value="Vector2( inf, inf )">
-			Infinity vector.
+			Infinity vector, a vector with all components set to [constant @GDScript.INF].
 		</constant>
 		<constant name="LEFT" value="Vector2( -1, 0 )">
-			Left unit vector.
+			Left unit vector. Represents the direction of left.
 		</constant>
 		<constant name="RIGHT" value="Vector2( 1, 0 )">
-			Right unit vector.
+			Right unit vector. Represents the direction of right.
 		</constant>
 		<constant name="UP" value="Vector2( 0, -1 )">
-			Up unit vector.
+			Up unit vector. Y is down in 2D, so this vector points -Y.
 		</constant>
 		<constant name="DOWN" value="Vector2( 0, 1 )">
-			Down unit vector.
+			Down unit vector. Y is down in 2D, so this vector points +Y.
 		</constant>
 	</constants>
 </class>
diff --git a/doc/classes/Vector2i.xml b/doc/classes/Vector2i.xml
index 2f7ca985b2..d03db712fc 100644
--- a/doc/classes/Vector2i.xml
+++ b/doc/classes/Vector2i.xml
@@ -70,22 +70,22 @@
 			Enumerated value for the Y axis.
 		</constant>
 		<constant name="ZERO" value="Vector2i( 0, 0 )">
-			Zero vector.
+			Zero vector, a vector with all components set to [code]0[/code].
 		</constant>
 		<constant name="ONE" value="Vector2i( 1, 1 )">
-			One vector.
+			One vector, a vector with all components set to [code]1[/code].
 		</constant>
 		<constant name="LEFT" value="Vector2i( -1, 0 )">
-			Left unit vector.
+			Left unit vector. Represents the direction of left.
 		</constant>
 		<constant name="RIGHT" value="Vector2i( 1, 0 )">
-			Right unit vector.
+			Right unit vector. Represents the direction of right.
 		</constant>
 		<constant name="UP" value="Vector2i( 0, -1 )">
-			Up unit vector.
+			Up unit vector. Y is down in 2D, so this vector points -Y.
 		</constant>
 		<constant name="DOWN" value="Vector2i( 0, 1 )">
-			Down unit vector.
+			Down unit vector. Y is down in 2D, so this vector points +Y.
 		</constant>
 	</constants>
 </class>
diff --git a/doc/classes/Vector3.xml b/doc/classes/Vector3.xml
index 7ba8cb5eed..776dfd929e 100644
--- a/doc/classes/Vector3.xml
+++ b/doc/classes/Vector3.xml
@@ -47,7 +47,7 @@
 			<argument index="0" name="to" type="Vector3">
 			</argument>
 			<description>
-				Returns the minimum angle to the given vector.
+				Returns the minimum angle to the given vector, in radians.
 			</description>
 		</method>
 		<method name="bounce">
@@ -63,7 +63,7 @@
 			<return type="Vector3">
 			</return>
 			<description>
-				Returns a new vector with all components rounded up.
+				Returns a new vector with all components rounded up (towards positive infinity).
 			</description>
 		</method>
 		<method name="cross">
@@ -72,7 +72,7 @@
 			<argument index="0" name="b" type="Vector3">
 			</argument>
 			<description>
-				Returns the cross product with [code]b[/code].
+				Returns the cross product of this vector and [code]b[/code].
 			</description>
 		</method>
 		<method name="cubic_interpolate">
@@ -87,7 +87,7 @@
 			<argument index="3" name="t" type="float">
 			</argument>
 			<description>
-				Performs a cubic interpolation between vectors [code]pre_a[/code], [code]a[/code], [code]b[/code], [code]post_b[/code] ([code]a[/code] is current), by the given amount [code]t[/code]. [code]t[/code] is in the range of [code]0.0 - 1.0[/code], representing the amount of interpolation.
+				Performs a cubic interpolation between vectors [code]pre_a[/code], [code]a[/code], [code]b[/code], [code]post_b[/code] ([code]a[/code] is current), by the given amount [code]t[/code]. [code]t[/code] is on the range of 0.0 to 1.0, representing the amount of interpolation.
 			</description>
 		</method>
 		<method name="direction_to">
@@ -105,7 +105,8 @@
 			<argument index="0" name="b" type="Vector3">
 			</argument>
 			<description>
-				Returns the squared distance to [code]b[/code]. Prefer this function over [method distance_to] if you need to sort vectors or need the squared distance for some formula.
+				Returns the squared distance between this vector and [code]b[/code].
+				This method runs faster than [method distance_to], so prefer it if you need to compare vectors or need the squared distance for some formula.
 			</description>
 		</method>
 		<method name="distance_to">
@@ -114,7 +115,7 @@
 			<argument index="0" name="b" type="Vector3">
 			</argument>
 			<description>
-				Returns the distance to [code]b[/code].
+				Returns the distance between this vector and [code]b[/code].
 			</description>
 		</method>
 		<method name="dot">
@@ -123,7 +124,7 @@
 			<argument index="0" name="b" type="Vector3">
 			</argument>
 			<description>
-				Returns the dot product with vector [code]b[/code]. This can be used to compare the angle between two vectors. For example, this can be used to determine whether an enemy is facing the player.
+				Returns the dot product of this vector and [code]b[/code]. This can be used to compare the angle between two vectors. For example, this can be used to determine whether an enemy is facing the player.
 				The dot product will be [code]0[/code] for a straight angle (90 degrees), greater than 0 for angles narrower than 90 degrees and lower than 0 for angles wider than 90 degrees.
 				When using unit (normalized) vectors, the result will always be between [code]-1.0[/code] (180 degree angle) when the vectors are facing opposite directions, and [code]1.0[/code] (0 degree angle) when the vectors are aligned.
 				[b]Note:[/b] [code]a.dot(b)[/code] is equivalent to [code]b.dot(a)[/code].
@@ -133,7 +134,7 @@
 			<return type="Vector3">
 			</return>
 			<description>
-				Returns a new vector with all components rounded down.
+				Returns a new vector with all components rounded down (towards negative infinity).
 			</description>
 		</method>
 		<method name="inverse">
@@ -156,21 +157,22 @@
 			<return type="bool">
 			</return>
 			<description>
-				Returns [code]true[/code] if the vector is normalized.
+				Returns [code]true[/code] if the vector is normalized, and false otherwise.
 			</description>
 		</method>
 		<method name="length">
 			<return type="float">
 			</return>
 			<description>
-				Returns the vector's length.
+				Returns the length (magnitude) of this vector.
 			</description>
 		</method>
 		<method name="length_squared">
 			<return type="float">
 			</return>
 			<description>
-				Returns the vector's length squared. Prefer this function over [method length] if you need to sort vectors or need the squared length for some formula.
+				Returns the squared length (squared magnitude) of this vector.
+				This method runs faster than [method length], so prefer it if you need to compare vectors or need the squared distance for some formula.
 			</description>
 		</method>
 		<method name="lerp">
@@ -181,21 +183,21 @@
 			<argument index="1" name="t" type="float">
 			</argument>
 			<description>
-				Returns the result of the linear interpolation between this vector and [code]b[/code] by amount [code]t[/code]. [code]t[/code] is in the range of [code]0.0 - 1.0[/code], representing the amount of interpolation..
+				Returns the result of the linear interpolation between this vector and [code]b[/code] by amount [code]t[/code]. [code]t[/code] is on the range of 0.0 to 1.0, representing the amount of interpolation.
 			</description>
 		</method>
 		<method name="max_axis">
 			<return type="int">
 			</return>
 			<description>
-				Returns the axis of the vector's largest value. See [code]AXIS_*[/code] constants.
+				Returns the axis of the vector's largest value. See [code]AXIS_*[/code] constants. If all components are equal, this method returns [constant AXIS_X].
 			</description>
 		</method>
 		<method name="min_axis">
 			<return type="int">
 			</return>
 			<description>
-				Returns the axis of the vector's smallest value. See [code]AXIS_*[/code] constants.
+				Returns the axis of the vector's smallest value. See [code]AXIS_*[/code] constants. If all components are equal, this method returns [constant AXIS_Z].
 			</description>
 		</method>
 		<method name="move_toward">
@@ -206,7 +208,7 @@
 			<argument index="1" name="delta" type="float">
 			</argument>
 			<description>
-				Moves the vector toward [code]to[/code] by the fixed [code]delta[/code] amount.
+				Moves this vector toward [code]to[/code] by the fixed [code]delta[/code] amount.
 			</description>
 		</method>
 		<method name="normalized">
@@ -231,7 +233,7 @@
 			<argument index="0" name="mod" type="float">
 			</argument>
 			<description>
-				Returns a vector composed of the [code]fposmod[/code] of this vector's components and [code]mod[/code].
+				Returns a vector composed of the [method @GDScript.fposmod] of this vector's components and [code]mod[/code].
 			</description>
 		</method>
 		<method name="posmodv">
@@ -240,7 +242,7 @@
 			<argument index="0" name="modv" type="Vector3">
 			</argument>
 			<description>
-				Returns a vector composed of the [code]fposmod[/code] of this vector's components and [code]modv[/code]'s components.
+				Returns a vector composed of the [method @GDScript.fposmod] of this vector's components and [code]modv[/code]'s components.
 			</description>
 		</method>
 		<method name="project">
@@ -249,7 +251,7 @@
 			<argument index="0" name="b" type="Vector3">
 			</argument>
 			<description>
-				Returns the vector projected onto the vector [code]b[/code].
+				Returns this vector projected onto another vector [code]b[/code].
 			</description>
 		</method>
 		<method name="reflect">
@@ -258,7 +260,7 @@
 			<argument index="0" name="n" type="Vector3">
 			</argument>
 			<description>
-				Returns the vector reflected from a plane defined by the given normal.
+				Returns this vector reflected from a plane defined by the given normal.
 			</description>
 		</method>
 		<method name="rotated">
@@ -269,21 +271,21 @@
 			<argument index="1" name="phi" type="float">
 			</argument>
 			<description>
-				Rotates the vector around a given axis by [code]phi[/code] radians. The axis must be a normalized vector.
+				Rotates this vector around a given axis by [code]phi[/code] radians. The axis must be a normalized vector.
 			</description>
 		</method>
 		<method name="round">
 			<return type="Vector3">
 			</return>
 			<description>
-				Returns the vector with all components rounded to the nearest integer, with halfway cases rounded away from zero.
+				Returns this vector with all components rounded to the nearest integer, with halfway cases rounded away from zero.
 			</description>
 		</method>
 		<method name="sign">
 			<return type="Vector3">
 			</return>
 			<description>
-				Returns the vector with each component set to one or negative one, depending on the signs of the components.
+				Returns a vector with each component set to one or negative one, depending on the signs of this vector's components, or zero if the component is zero, by calling [method @GDScript.sign] on each component.
 			</description>
 		</method>
 		<method name="slerp">
@@ -294,7 +296,7 @@
 			<argument index="1" name="t" type="float">
 			</argument>
 			<description>
-				Returns the result of spherical linear interpolation between this vector and [code]b[/code], by amount [code]t[/code]. [code]t[/code] is in the range of [code]0.0 - 1.0[/code], representing the amount of interpolation.
+				Returns the result of spherical linear interpolation between this vector and [code]b[/code], by amount [code]t[/code]. [code]t[/code] is on the range of 0.0 to 1.0, representing the amount of interpolation.
 				[b]Note:[/b] Both vectors must be normalized.
 			</description>
 		</method>
@@ -304,7 +306,7 @@
 			<argument index="0" name="n" type="Vector3">
 			</argument>
 			<description>
-				Returns the component of the vector along a plane defined by the given normal.
+				Returns this vector slid along a plane defined by the given normal.
 			</description>
 		</method>
 		<method name="snapped">
@@ -313,7 +315,7 @@
 			<argument index="0" name="by" type="Vector3">
 			</argument>
 			<description>
-				Returns the vector snapped to a grid with the given size.
+				Returns this vector with each component snapped to the nearest multiple of [code]step[/code]. This can also be used to round to an arbitrary number of decimals.
 			</description>
 		</method>
 		<method name="to_diagonal_matrix">
@@ -321,6 +323,7 @@
 			</return>
 			<description>
 				Returns a diagonal matrix with the vector as main diagonal.
+				This is equivalent to a Basis with no rotation or shearing and this vector's components set as the scale.
 			</description>
 		</method>
 	</methods>
@@ -346,19 +349,19 @@
 			Enumerated value for the Z axis. Returned by [method max_axis] and [method min_axis].
 		</constant>
 		<constant name="ZERO" value="Vector3( 0, 0, 0 )">
-			Zero vector.
+			Zero vector, a vector with all components set to [code]0[/code].
 		</constant>
 		<constant name="ONE" value="Vector3( 1, 1, 1 )">
-			One vector.
+			One vector, a vector with all components set to [code]1[/code].
 		</constant>
 		<constant name="INF" value="Vector3( inf, inf, inf )">
-			Infinity vector.
+			Infinity vector, a vector with all components set to [constant @GDScript.INF].
 		</constant>
 		<constant name="LEFT" value="Vector3( -1, 0, 0 )">
-			Left unit vector.
+			Left unit vector. Represents the local direction of left, and the global direction of west.
 		</constant>
 		<constant name="RIGHT" value="Vector3( 1, 0, 0 )">
-			Right unit vector.
+			Right unit vector. Represents the local direction of right, and the global direction of east.
 		</constant>
 		<constant name="UP" value="Vector3( 0, 1, 0 )">
 			Up unit vector.
@@ -367,10 +370,10 @@
 			Down unit vector.
 		</constant>
 		<constant name="FORWARD" value="Vector3( 0, 0, -1 )">
-			Forward unit vector.
+			Forward unit vector. Represents the local direction of forward, and the global direction of north.
 		</constant>
 		<constant name="BACK" value="Vector3( 0, 0, 1 )">
-			Back unit vector.
+			Back unit vector. Represents the local direction of back, and the global direction of south.
 		</constant>
 	</constants>
 </class>
diff --git a/doc/classes/Vector3i.xml b/doc/classes/Vector3i.xml
index 91d64ea609..94551e1c2f 100644
--- a/doc/classes/Vector3i.xml
+++ b/doc/classes/Vector3i.xml
@@ -38,14 +38,14 @@
 			<return type="int">
 			</return>
 			<description>
-				Returns the axis of the vector's largest value. See [code]AXIS_*[/code] constants.
+				Returns the axis of the vector's largest value. See [code]AXIS_*[/code] constants. If all components are equal, this method returns [constant AXIS_X].
 			</description>
 		</method>
 		<method name="min_axis">
 			<return type="int">
 			</return>
 			<description>
-				Returns the axis of the vector's smallest value. See [code]AXIS_*[/code] constants.
+				Returns the axis of the vector's smallest value. See [code]AXIS_*[/code] constants. If all components are equal, this method returns [constant AXIS_Z].
 			</description>
 		</method>
 		<method name="sign">
@@ -78,16 +78,16 @@
 			Enumerated value for the Z axis.
 		</constant>
 		<constant name="ZERO" value="Vector3i( 0, 0, 0 )">
-			Zero vector.
+			Zero vector, a vector with all components set to [code]0[/code].
 		</constant>
 		<constant name="ONE" value="Vector3i( 1, 1, 1 )">
-			One vector.
+			One vector, a vector with all components set to [code]1[/code].
 		</constant>
 		<constant name="LEFT" value="Vector3i( -1, 0, 0 )">
-			Left unit vector.
+			Left unit vector. Represents the local direction of left, and the global direction of west.
 		</constant>
 		<constant name="RIGHT" value="Vector3i( 1, 0, 0 )">
-			Right unit vector.
+			Right unit vector. Represents the local direction of right, and the global direction of east.
 		</constant>
 		<constant name="UP" value="Vector3i( 0, 1, 0 )">
 			Up unit vector.
@@ -96,10 +96,10 @@
 			Down unit vector.
 		</constant>
 		<constant name="FORWARD" value="Vector3i( 0, 0, -1 )">
-			Forward unit vector.
+			Forward unit vector. Represents the local direction of forward, and the global direction of north.
 		</constant>
 		<constant name="BACK" value="Vector3i( 0, 0, 1 )">
-			Back unit vector.
+			Back unit vector. Represents the local direction of back, and the global direction of south.
 		</constant>
 	</constants>
 </class>
diff --git a/doc/classes/Viewport.xml b/doc/classes/Viewport.xml
index 8a2c6b73d8..3294ab4cc7 100644
--- a/doc/classes/Viewport.xml
+++ b/doc/classes/Viewport.xml
@@ -315,7 +315,7 @@
 			Do not perform any antialiasing in the full screen post-process.
 		</constant>
 		<constant name="SCREEN_SPACE_AA_FXAA" value="1" enum="ScreenSpaceAA">
-			Use fast approximate antialiasing. FXAA is a popular screen-space antialising method, which is fast but will make the image look blurry, especially at lower resolutions. It can still work relatively well at large resolutions such as 1440p and 4K.
+			Use fast approximate antialiasing. FXAA is a popular screen-space antialiasing method, which is fast but will make the image look blurry, especially at lower resolutions. It can still work relatively well at large resolutions such as 1440p and 4K.
 		</constant>
 		<constant name="SCREEN_SPACE_AA_MAX" value="2" enum="ScreenSpaceAA">
 			Represents the size of the [enum ScreenSpaceAA] enum.
diff --git a/doc/classes/VisualShaderNodeOutput.xml b/doc/classes/VisualShaderNodeOutput.xml
index 2b4aed9ae4..83da6f29f9 100644
--- a/doc/classes/VisualShaderNodeOutput.xml
+++ b/doc/classes/VisualShaderNodeOutput.xml
@@ -4,7 +4,7 @@
 		Represents the output shader parameters within the visual shader graph.
 	</brief_description>
 	<description>
-		This visual shader node is present in all shader graphs in form of "Output" block with mutliple output value ports.
+		This visual shader node is present in all shader graphs in form of "Output" block with multiple output value ports.
 	</description>
 	<tutorials>
 	</tutorials>
diff --git a/doc/classes/VisualShaderNodeVectorRefract.xml b/doc/classes/VisualShaderNodeVectorRefract.xml
index 0fa90a69cf..178c35f49a 100644
--- a/doc/classes/VisualShaderNodeVectorRefract.xml
+++ b/doc/classes/VisualShaderNodeVectorRefract.xml
@@ -4,7 +4,7 @@
 		Returns the [Vector3] that points in the direction of refraction. For use within the visual shader graph.
 	</brief_description>
 	<description>
-		Translated to [code]refract(I, N, eta)[/code] in the shader language, where [code]I[/code] is the incident vector, [code]N[/code] is the normal vector and [code]eta[/code] is the ratio of the indicies of the refraction.
+		Translated to [code]refract(I, N, eta)[/code] in the shader language, where [code]I[/code] is the incident vector, [code]N[/code] is the normal vector and [code]eta[/code] is the ratio of the indices of the refraction.
 	</description>
 	<tutorials>
 	</tutorials>