diff --git a/doc/classes/TileMap.xml b/doc/classes/TileMap.xml
index c074b1fbcd3..abe4890e47c 100644
--- a/doc/classes/TileMap.xml
+++ b/doc/classes/TileMap.xml
@@ -16,7 +16,7 @@
 			<return type="void">
 			</return>
 			<description>
-				Clear all cells.
+				Clears all cells.
 			</description>
 		</method>
 		<method name="get_cell" qualifiers="const">
@@ -27,7 +27,7 @@
 			<argument index="1" name="y" type="int">
 			</argument>
 			<description>
-				Return the tile index of the referenced cell.
+				Returns the tile index of the given cell.
 			</description>
 		</method>
 		<method name="get_cellv" qualifiers="const">
@@ -36,7 +36,7 @@
 			<argument index="0" name="position" type="Vector2">
 			</argument>
 			<description>
-				Return the tile index of the cell referenced by a Vector2.
+				Returns the tile index of the cell given by a Vector2.
 			</description>
 		</method>
 		<method name="get_collision_layer_bit" qualifiers="const">
@@ -45,6 +45,7 @@
 			<argument index="0" name="bit" type="int">
 			</argument>
 			<description>
+                Returns [code]true[/code] if the given collision layer bit is set.
 			</description>
 		</method>
 		<method name="get_collision_mask_bit" qualifiers="const">
@@ -53,13 +54,14 @@
 			<argument index="0" name="bit" type="int">
 			</argument>
 			<description>
+                Returns [code]true[/code] if the given collision mask bit is set.
 			</description>
 		</method>
 		<method name="get_used_cells" qualifiers="const">
 			<return type="Array">
 			</return>
 			<description>
-				Return an array of all cells containing a tile from the tileset (i.e. a tile index different from -1).
+				Returns an array of all cells containing a tile from the tileset (i.e. a tile index different from [code]-1[/code]).
 			</description>
 		</method>
 		<method name="get_used_cells_by_id" qualifiers="const">
@@ -68,12 +70,14 @@
 			<argument index="0" name="id" type="int">
 			</argument>
 			<description>
+                Returns an array of all cells with the given tile id.
 			</description>
 		</method>
 		<method name="get_used_rect">
 			<return type="Rect2">
 			</return>
 			<description>
+                Returns a rectangle enclosing the used (non-empty) tiles of the map.
 			</description>
 		</method>
 		<method name="is_cell_transposed" qualifiers="const">
@@ -84,7 +88,7 @@
 			<argument index="1" name="y" type="int">
 			</argument>
 			<description>
-				Return whether the referenced cell is transposed, i.e. the X and Y axes are swapped (mirroring with regard to the (1,1) vector).
+				Returns [code]true[/code] if the given cell is transposed, i.e. the x and y axes are swapped.
 			</description>
 		</method>
 		<method name="is_cell_x_flipped" qualifiers="const">
@@ -95,7 +99,7 @@
 			<argument index="1" name="y" type="int">
 			</argument>
 			<description>
-				Return whether the referenced cell is flipped over the X axis.
+				Returns [code]true[/code] if the given cell is flipped in the x axis.
 			</description>
 		</method>
 		<method name="is_cell_y_flipped" qualifiers="const">
@@ -106,7 +110,7 @@
 			<argument index="1" name="y" type="int">
 			</argument>
 			<description>
-				Return whether the referenced cell is flipped over the Y axis.
+				Returns [code]true[/code] if the given cell is flipped in the y axis.
 			</description>
 		</method>
 		<method name="map_to_world" qualifiers="const">
@@ -117,8 +121,8 @@
 			<argument index="1" name="ignore_half_ofs" type="bool" default="false">
 			</argument>
 			<description>
-				Return the absolute world position corresponding to the tilemap (grid-based) coordinates given as an argument.
-				Optionally, the tilemap's potential half offset can be ignored.
+                Returns the global position corresponding to the given tilemap (grid-based) coordinates.
+				Optionally, the tilemap's half offset can be ignored.
 			</description>
 		</method>
 		<method name="set_cell">
@@ -139,9 +143,9 @@
 			<argument index="6" name="autotile_coord" type="Vector2" default="Vector2( 0, 0 )">
 			</argument>
 			<description>
-				Set the tile index for the cell referenced by its grid-based X and Y coordinates.
-				A tile index of -1 clears the cell.
-				Optionally, the tile can also be flipped over the X and Y coordinates, transposed, or be given autotile coordinates.
+				Sets the tile index for the cell given by a Vector2.
+				An index of [code]-1[/code] clears the cell.
+				Optionally, the tile can also be flipped, transposed, or given autotile coordinates.
 			</description>
 		</method>
 		<method name="set_cellv">
@@ -158,9 +162,9 @@
 			<argument index="4" name="transpose" type="bool" default="false">
 			</argument>
 			<description>
-				Set the tile index for the cell referenced by a Vector2 of grid-based coordinates.
-				A tile index of -1 clears the cell.
-				Optionally, the tile can also be flipped over the X and Y axes or transposed.
+				Sets the tile index for the given cell.
+				An index of [code]-1[/code] clears the cell.
+				Optionally, the tile can also be flipped or transposed.
 			</description>
 		</method>
 		<method name="set_collision_layer_bit">
@@ -171,7 +175,7 @@
 			<argument index="1" name="value" type="bool">
 			</argument>
 			<description>
-				Set any collision layer to be [code]true[/code] or [code]false[/code].
+				Sets the given collision layer bit.
 			</description>
 		</method>
 		<method name="set_collision_mask_bit">
@@ -182,6 +186,7 @@
 			<argument index="1" name="value" type="bool">
 			</argument>
 			<description>
+                Sets the given collision mask bit.
 			</description>
 		</method>
 		<method name="update_bitmask_area">
@@ -190,7 +195,7 @@
 			<argument index="0" name="position" type="Vector2">
 			</argument>
 			<description>
-				Applies autotiling rules to the cell (and its adjacent cells) referenced by its grid-based X and Y coordinates.
+				Applies autotiling rules to the cell (and its adjacent cells) referenced by its grid-based x and y coordinates.
 			</description>
 		</method>
 		<method name="update_bitmask_region">
@@ -201,8 +206,8 @@
 			<argument index="1" name="end" type="Vector2" default="Vector2( 0, 0 )">
 			</argument>
 			<description>
-				Applies autotiling rules to the cells in the given region (specified by grid-based X and Y coordinates).
-				Calling with invalid (or missing) parameters applies autotiling rules for the entire TileMap.
+				Applies autotiling rules to the cells in the given region (specified by grid-based x and y coordinates).
+				Calling with invalid (or missing) parameters applies autotiling rules for the entire tilemap.
 			</description>
 		</method>
 		<method name="world_to_map" qualifiers="const">
@@ -211,7 +216,7 @@
 			<argument index="0" name="world_position" type="Vector2">
 			</argument>
 			<description>
-				Return the tilemap (grid-based) coordinates corresponding to the absolute world position given as an argument.
+                Returns the tilemap (grid-based) coordinatescorresponding to the given global position.
 			</description>
 		</method>
 	</methods>
diff --git a/doc/classes/Vector2.xml b/doc/classes/Vector2.xml
index 15e7061b9d3..95c2a31dfbe 100644
--- a/doc/classes/Vector2.xml
+++ b/doc/classes/Vector2.xml
@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <class name="Vector2" category="Built-In Types" version="3.0.2">
 	<brief_description>
-		Vector used for 2D Math.
+		Vector used for 2D math.
 	</brief_description>
 	<description>
-		2-element structure that can be used to represent positions in 2d-space, or any other pair of numeric values.
+		2-element structure that can be used to represent positions in 2d space or any other pair of numeric values.
 	</description>
 	<tutorials>
 		http://docs.godotengine.org/en/3.0/tutorials/math/index.html
@@ -34,8 +34,8 @@
 			<return type="float">
 			</return>
 			<description>
-				Returns the result of atan2 when called with the Vector's x and y as parameters (Math::atan2(x,y)).
-				Be aware that it therefore returns an angle oriented clockwise with regard to the (0, 1) unit vector, and not an angle oriented counter-clockwise with regard to the (1, 0) unit vector (which would be the typical trigonometric representation of the angle when calling Math::atan2(y,x)).
+                Returns the vector's angle in radians with respect to the x-axis, or [code](1, 0)[/code] vector.
+				Equivalent to the result of atan2 when called with the vector's x and y as parameters: [code]atan2(x, y)[/code].
 			</description>
 		</method>
 		<method name="angle_to">
@@ -60,7 +60,7 @@
 			<return type="float">
 			</return>
 			<description>
-				Returns the ratio of X to Y.
+				Returns the ratio of x to y.
 			</description>
 		</method>
 		<method name="bounce">
@@ -69,7 +69,7 @@
 			<argument index="0" name="n" type="Vector2">
 			</argument>
 			<description>
-				Bounce returns the vector "bounced off" from the given plane, specified by its normal vector.
+				Returns the vector "bounced off" from a plane defined by the given normal.
 			</description>
 		</method>
 		<method name="clamped">
@@ -93,7 +93,7 @@
 			<argument index="3" name="t" type="float">
 			</argument>
 			<description>
-				Cubicly interpolates between this Vector and "b", using "pre_a" and "post_b" as handles, and returning the result at position "t". "t" should be a float of 0.0-1.0, a percentage of how far along the interpolation is.
+				Cubicly 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], or a percentage of how far along the interpolation is.
 			</description>
 		</method>
 		<method name="distance_squared_to">
@@ -102,7 +102,7 @@
 			<argument index="0" name="to" type="Vector2">
 			</argument>
 			<description>
-				Returns the squared distance to vector "b". Prefer this function over "distance_to" if you need to sort vectors or need the squared distance for some formula.
+				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.
 			</description>
 		</method>
 		<method name="distance_to">
@@ -111,7 +111,7 @@
 			<argument index="0" name="to" type="Vector2">
 			</argument>
 			<description>
-				Returns the distance to vector "b".
+				Returns the distance to vector [code]b[/code].
 			</description>
 		</method>
 		<method name="dot">
@@ -120,7 +120,7 @@
 			<argument index="0" name="with" type="Vector2">
 			</argument>
 			<description>
-				Returns the dot product with vector "b".
+				Returns the dot product with vector [code]b[/code].
 			</description>
 		</method>
 		<method name="floor">
@@ -134,21 +134,21 @@
 			<return type="bool">
 			</return>
 			<description>
-				Returns whether the vector is normalized or not.
+				Returns [code]true[/code] if the vector is normalized.
 			</description>
 		</method>
 		<method name="length">
 			<return type="float">
 			</return>
 			<description>
-				Returns the length of the vector.
+				Returns the vector's length.
 			</description>
 		</method>
 		<method name="length_squared">
 			<return type="float">
 			</return>
 			<description>
-				Returns the squared length of the vector. Prefer this function over "length" if you need to sort vectors or need the squared length for some formula.
+				Returns the vector's length squared. Prefer this function over [member length] if you need to sort vectors or need the squared length for some formula.
 			</description>
 		</method>
 		<method name="linear_interpolate">
@@ -159,14 +159,14 @@
 			<argument index="1" name="t" type="float">
 			</argument>
 			<description>
-				Returns the result of the linear interpolation between this vector and "b", by amount "t". "t" should be a float of 0.0-1.0, a percentage of how far along the interpolation is.
+				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], a percentage of how far along the interpolation is.
 			</description>
 		</method>
 		<method name="normalized">
 			<return type="Vector2">
 			</return>
 			<description>
-				Returns a normalized vector to unit length.
+				Returns the vector scaled to unit length. Equivalent to [code]v / v.length()[/code].
 			</description>
 		</method>
 		<method name="reflect">
@@ -175,7 +175,7 @@
 			<argument index="0" name="n" type="Vector2">
 			</argument>
 			<description>
-				Reflects the vector along the given plane, specified by its normal vector.
+                Returns the vector reflected from a plane defined by the given normal.
 			</description>
 		</method>
 		<method name="rotated">
@@ -184,7 +184,7 @@
 			<argument index="0" name="phi" type="float">
 			</argument>
 			<description>
-				Rotates the vector by "phi" radians.
+				Returns the vector rotated by [code]phi[/code] radians.
 			</description>
 		</method>
 		<method name="slide">
@@ -193,7 +193,7 @@
 			<argument index="0" name="n" type="Vector2">
 			</argument>
 			<description>
-				Slide returns the component of the vector along the given plane, specified by its normal vector.
+				Returns the component of the vector along a plane defined by the given normal.
 			</description>
 		</method>
 		<method name="snapped">
@@ -202,7 +202,7 @@
 			<argument index="0" name="by" type="Vector2">
 			</argument>
 			<description>
-				Snaps the vector to a grid with the given size.
+				Returns the vector snapped to a grid with the given size.
 			</description>
 		</method>
 		<method name="tangent">
@@ -215,10 +215,10 @@
 	</methods>
 	<members>
 		<member name="x" type="float" setter="" getter="">
-			X component of the vector.
+			The vector's x component.
 		</member>
 		<member name="y" type="float" setter="" getter="">
-			Y component of the vector.
+			The vector's y component.
 		</member>
 	</members>
 	<constants>
diff --git a/doc/classes/Vector3.xml b/doc/classes/Vector3.xml
index 99b36285d71..b8458036488 100644
--- a/doc/classes/Vector3.xml
+++ b/doc/classes/Vector3.xml
@@ -38,7 +38,7 @@
 			<argument index="0" name="to" type="Vector3">
 			</argument>
 			<description>
-				Returns the vector's minimum angle to the vector [code]to[/code].
+				Returns the minimum angle to the given vector.
 			</description>
 		</method>
 		<method name="bounce">
@@ -47,7 +47,7 @@
 			<argument index="0" name="n" type="Vector3">
 			</argument>
 			<description>
-				Bounce returns the vector "bounced off" from the given plane, specified by its normal vector.
+				Returns the vector "bounced off" from a plane defined by the given normal.
 			</description>
 		</method>
 		<method name="ceil">
@@ -87,7 +87,7 @@
 			<argument index="0" name="b" type="Vector3">
 			</argument>
 			<description>
-				Returns the squared distance to [code]b[/code]. Prefer this function over distance_to if you need to sort vectors or need the squared distance for some formula.
+				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.
 			</description>
 		</method>
 		<method name="distance_to">
@@ -96,7 +96,7 @@
 			<argument index="0" name="b" type="Vector3">
 			</argument>
 			<description>
-				Returns the distance to b.
+				Returns the distance to [code]b[/code].
 			</description>
 		</method>
 		<method name="dot">
@@ -105,7 +105,7 @@
 			<argument index="0" name="b" type="Vector3">
 			</argument>
 			<description>
-				Returns the dot product with b.
+				Returns the dot product with [code]b[/code].
 			</description>
 		</method>
 		<method name="floor">
@@ -119,28 +119,28 @@
 			<return type="Vector3">
 			</return>
 			<description>
-				Returns the inverse of the vector. This is the same as Vector3( 1.0 / v.x, 1.0 / v.y, 1.0 / v.z )
+				Returns the inverse of the vector. This is the same as [code]Vector3( 1.0 / v.x, 1.0 / v.y, 1.0 / v.z )[/code].
 			</description>
 		</method>
 		<method name="is_normalized">
 			<return type="bool">
 			</return>
 			<description>
-				Returns whether the vector is normalized or not.
+				Returns [code]true[/code] if the vector is normalized.
 			</description>
 		</method>
 		<method name="length">
 			<return type="float">
 			</return>
 			<description>
-				Returns the length of the vector.
+				Returns the vector's length.
 			</description>
 		</method>
 		<method name="length_squared">
 			<return type="float">
 			</return>
 			<description>
-				Returns the length of the vector, squared. Prefer this function over "length" if you need to sort vectors or need the squared length for some formula.
+				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.
 			</description>
 		</method>
 		<method name="linear_interpolate">
@@ -151,28 +151,28 @@
 			<argument index="1" name="t" type="float">
 			</argument>
 			<description>
-				Linearly interpolates the vector to a given one (b), by the given amount (t). (t) should be a float of 0.0-1.0, a percentage of how far along the interpolation is.
+                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], a percentage of how far along the interpolation is.
 			</description>
 		</method>
 		<method name="max_axis">
 			<return type="int">
 			</return>
 			<description>
-				Returns AXIS_X, AXIS_Y or AXIS_Z depending on which axis is the largest.
+				Returns the axis of the vector's largest value. See [code]AXIS_*[/code] constants.
 			</description>
 		</method>
 		<method name="min_axis">
 			<return type="int">
 			</return>
 			<description>
-				Returns AXIS_X, AXIS_Y or AXIS_Z depending on which axis is the smallest.
+				Returns the axis of the vector's smallest value. See [code]AXIS_*[/code] constants.
 			</description>
 		</method>
 		<method name="normalized">
 			<return type="Vector3">
 			</return>
 			<description>
-				Returns a copy of the normalized vector to unit length. This is the same as v / v.length().
+				Returns the vector scaled to unit length. Equivalent to [code]v / v.length()[/code].
 			</description>
 		</method>
 		<method name="outer">
@@ -181,7 +181,7 @@
 			<argument index="0" name="b" type="Vector3">
 			</argument>
 			<description>
-				Returns the outer product with b.
+				Returns the outer product with [code]b[/code].
 			</description>
 		</method>
 		<method name="reflect">
@@ -190,7 +190,7 @@
 			<argument index="0" name="n" type="Vector3">
 			</argument>
 			<description>
-				Reflects the vector along the given plane, specified by its normal vector.
+				Returns the vector reflected from a plane defined by the given normal.
 			</description>
 		</method>
 		<method name="rotated">
@@ -201,7 +201,7 @@
 			<argument index="1" name="phi" type="float">
 			</argument>
 			<description>
-				Rotates the vector around some axis by phi radians. The axis must be a normalized vector.
+				Rotates the vector around a given axis by [code]phi[/code] radians. The axis must be a normalized vector.
 			</description>
 		</method>
 		<method name="slide">
@@ -210,7 +210,7 @@
 			<argument index="0" name="n" type="Vector3">
 			</argument>
 			<description>
-				Slide returns the component of the vector along the given plane, specified by its normal vector.
+				Returns the component of the vector along a plane defined by the given normal.
 			</description>
 		</method>
 		<method name="snapped">
@@ -232,18 +232,18 @@
 	</methods>
 	<members>
 		<member name="x" type="float" setter="" getter="">
-			X component of the vector.
+			The vector's x component.
 		</member>
 		<member name="y" type="float" setter="" getter="">
-			Y component of the vector.
+			The vector's y component.
 		</member>
 		<member name="z" type="float" setter="" getter="">
-			Z component of the vector.
+			The vector's z component.
 		</member>
 	</members>
 	<constants>
 		<constant name="AXIS_X" value="0">
-			Enumerated value for the X axis. Returned by functions like max_axis or min_axis.
+			Enumerated value for the X axis. Returned by [method max_axis] and [method min_axis].
 		</constant>
 		<constant name="AXIS_Y" value="1">
 			Enumerated value for the Y axis.