diff --git a/doc/classes/Vector2.xml b/doc/classes/Vector2.xml
index cf324e8fc36..38bc866f00f 100644
--- a/doc/classes/Vector2.xml
+++ b/doc/classes/Vector2.xml
@@ -100,7 +100,7 @@
 			<argument index="3" name="t" type="float">
 			</argument>
 			<description>
-				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.
+				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], representing the amount of interpolation.
 			</description>
 		</method>
 		<method name="distance_squared_to">
@@ -166,7 +166,7 @@
 			<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], 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], representing the amount of interpolation.
 			</description>
 		</method>
 		<method name="normalized">
diff --git a/doc/classes/Vector3.xml b/doc/classes/Vector3.xml
index c116eb26d37..95cc7127dfa 100644
--- a/doc/classes/Vector3.xml
+++ b/doc/classes/Vector3.xml
@@ -78,7 +78,7 @@
 			<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 (t). (t) should be a float of 0.0-1.0, a percentage of how far along the interpolation is.
+				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.
 			</description>
 		</method>
 		<method name="distance_squared_to">
@@ -151,7 +151,7 @@
 			<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], 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], representing the amount of interpolation..
 			</description>
 		</method>
 		<method name="max_axis">
diff --git a/doc/classes/VideoStream.xml b/doc/classes/VideoStream.xml
index 13149faec5b..a245eecbd14 100644
--- a/doc/classes/VideoStream.xml
+++ b/doc/classes/VideoStream.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <class name="VideoStream" inherits="Resource" category="Core" version="3.0.7">
 	<brief_description>
+		Base resource for video streams.
 	</brief_description>
 	<description>
 	</description>
diff --git a/doc/classes/ViewportContainer.xml b/doc/classes/ViewportContainer.xml
index 7e0364abf81..6aa065cdd65 100644
--- a/doc/classes/ViewportContainer.xml
+++ b/doc/classes/ViewportContainer.xml
@@ -1,8 +1,10 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <class name="ViewportContainer" inherits="Container" category="Core" version="3.0.7">
 	<brief_description>
+		Control for holding [Viewport]s.
 	</brief_description>
 	<description>
+		A [Container] node that holds a [Viewport], automatically setting its size.
 	</description>
 	<tutorials>
 	</tutorials>
@@ -12,6 +14,7 @@
 	</methods>
 	<members>
 		<member name="stretch" type="bool" setter="set_stretch" getter="is_stretch_enabled">
+			If [code]true[/code] the viewport will be scaled to the control's size. Default value:[code]false[/code].
 		</member>
 		<member name="stretch_shrink" type="int" setter="set_stretch_shrink" getter="get_stretch_shrink">
 		</member>
diff --git a/doc/classes/WindowDialog.xml b/doc/classes/WindowDialog.xml
index 099ab92dc34..a8cc414b289 100644
--- a/doc/classes/WindowDialog.xml
+++ b/doc/classes/WindowDialog.xml
@@ -24,7 +24,7 @@
 			If [code]true[/code] the user can resize the window. Default value: [code]false[/code].
 		</member>
 		<member name="window_title" type="String" setter="set_title" getter="get_title">
-			The text displayed in the window's title bar. Default value: "Save a File".
+			The text displayed in the window's title bar.
 		</member>
 	</members>
 	<constants>