diff --git a/doc/en/Gdk/DeviceAxis.xml b/doc/en/Gdk/DeviceAxis.xml
index c0edddded..5a84eb276 100644
--- a/doc/en/Gdk/DeviceAxis.xml
+++ b/doc/en/Gdk/DeviceAxis.xml
@@ -66,7 +66,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>The minimal value that will be reported by this axis.</summary>
+        <summary>Minimal value that will be reported by this axis.</summary>
         <remarks>To be added</remarks>
       </Docs>
     </Member>
@@ -79,7 +79,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>The maximal value that will be reported by this axis.</summary>
+        <summary>Maximal value that will be reported by this axis.</summary>
         <remarks>To be added</remarks>
       </Docs>
     </Member>
diff --git a/doc/en/Gdk/DeviceKey.xml b/doc/en/Gdk/DeviceKey.xml
index 5a1847048..ffaa0da39 100644
--- a/doc/en/Gdk/DeviceKey.xml
+++ b/doc/en/Gdk/DeviceKey.xml
@@ -53,7 +53,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>The keyval to generate when the macro button is pressed. If this is 0, no keypress will be generated.</summary>
+        <summary>Keyval to generate when the macro button is pressed. If this is 0, no keypress will be generated.</summary>
         <remarks>To be added</remarks>
       </Docs>
     </Member>
diff --git a/doc/en/Gdk/GCValues.xml b/doc/en/Gdk/GCValues.xml
index 9728645f1..ac6e4338c 100644
--- a/doc/en/Gdk/GCValues.xml
+++ b/doc/en/Gdk/GCValues.xml
@@ -8,7 +8,7 @@
   </AssemblyInfo>
   <ThreadSafetyStatement>Gtk# is thread aware, but not thread safe; See the <link location="node:gtk-sharp/programming/threads">Gtk# Thread Programming</link> for details.</ThreadSafetyStatement>
   <Docs>
-    <summary>To be added</summary>
+    <summary>Holds a set of values used to create or modify a graphics context.</summary>
     <remarks>To be added</remarks>
   </Docs>
   <Base>
@@ -53,7 +53,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>To be added</summary>
+        <summary>The clip mask bitmap.</summary>
         <value>To be added: an object of type 'Gdk.Pixmap'</value>
         <remarks>To be added</remarks>
       </Docs>
@@ -72,7 +72,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>To be added</summary>
+        <summary>The stipple bitmap.</summary>
         <value>To be added: an object of type 'Gdk.Pixmap'</value>
         <remarks>To be added</remarks>
       </Docs>
@@ -91,7 +91,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>To be added</summary>
+        <summary>The tile pixmap.</summary>
         <value>To be added: an object of type 'Gdk.Pixmap'</value>
         <remarks>To be added</remarks>
       </Docs>
@@ -110,7 +110,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>To be added</summary>
+        <summary>The foreground color.</summary>
         <remarks>To be added</remarks>
       </Docs>
     </Member>
@@ -123,7 +123,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>To be added</summary>
+        <summary>The background color.</summary>
         <remarks>To be added</remarks>
       </Docs>
     </Member>
@@ -136,7 +136,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>To be added</summary>
+        <summary>The bitwise operation used when drawing.</summary>
         <remarks>To be added</remarks>
       </Docs>
     </Member>
@@ -149,7 +149,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>To be added</summary>
+        <summary>The fill style.</summary>
         <remarks>To be added</remarks>
       </Docs>
     </Member>
@@ -175,7 +175,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>To be added</summary>
+        <summary>The x origin of the tile or stipple.</summary>
         <remarks>To be added</remarks>
       </Docs>
     </Member>
@@ -188,7 +188,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>To be added</summary>
+        <summary>The y origin of the tile or stipple.</summary>
         <remarks>To be added</remarks>
       </Docs>
     </Member>
@@ -201,7 +201,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>To be added</summary>
+        <summary>The x origin of the clip mask.</summary>
         <remarks>To be added</remarks>
       </Docs>
     </Member>
@@ -214,7 +214,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>To be added</summary>
+        <summary>The y origin of the clip mask.</summary>
         <remarks>To be added</remarks>
       </Docs>
     </Member>
@@ -227,7 +227,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>To be added</summary>
+        <summary>Whether graphics exposures are enabled.</summary>
         <remarks>To be added</remarks>
       </Docs>
     </Member>
@@ -240,7 +240,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>To be added</summary>
+        <summary>The line width.</summary>
         <remarks>To be added</remarks>
       </Docs>
     </Member>
@@ -253,7 +253,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>To be added</summary>
+        <summary>The way dashed lines are drawn.</summary>
         <remarks>To be added</remarks>
       </Docs>
     </Member>
@@ -266,7 +266,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>To be added</summary>
+        <summary>The way the ends of lines are drawn.</summary>
         <remarks>To be added</remarks>
       </Docs>
     </Member>
@@ -279,7 +279,7 @@
       <Parameters>
       </Parameters>
       <Docs>
-        <summary>To be added</summary>
+        <summary>The way joins between lines are drawn.</summary>
         <remarks>To be added</remarks>
       </Docs>
     </Member>
@@ -334,4 +334,4 @@
       </Docs>
     </Member>
   </Members>
-</Type>
+</Type>
\ No newline at end of file
diff --git a/doc/en/Gdk/Image.xml b/doc/en/Gdk/Image.xml
index 736f024e8..c29b3c4da 100644
--- a/doc/en/Gdk/Image.xml
+++ b/doc/en/Gdk/Image.xml
@@ -8,7 +8,7 @@
   </AssemblyInfo>
   <ThreadSafetyStatement>Gtk# is thread aware, but not thread safe; See the <link location="node:gtk-sharp/programming/threads">Gtk# Thread Programming</link> for details.</ThreadSafetyStatement>
   <Docs>
-    <summary>To be added</summary>
+    <summary>Contains information on the image and the pixel data.</summary>
     <remarks>To be added</remarks>
   </Docs>
   <Base>
@@ -321,4 +321,4 @@
       </Docs>
     </Member>
   </Members>
-</Type>
+</Type>
\ No newline at end of file
diff --git a/doc/en/Gdk/ModifierType.xml b/doc/en/Gdk/ModifierType.xml
index 17ff24be9..4d95c8455 100644
--- a/doc/en/Gdk/ModifierType.xml
+++ b/doc/en/Gdk/ModifierType.xml
@@ -202,7 +202,7 @@ Like the X Window System, GDK supports 8 modifier keys and 5 mouse buttons.</sum
       </ReturnValue>
       <Parameters />
       <Docs>
-        <summary>None.</summary>
+        <summary>Not used in GDK itself. GTK+ uses it to differentiate between (keyval, modifiers) pairs from key press and release events.</summary>
         <remarks>
         </remarks>
       </Docs>
@@ -215,7 +215,7 @@ Like the X Window System, GDK supports 8 modifier keys and 5 mouse buttons.</sum
       </ReturnValue>
       <Parameters />
       <Docs>
-        <summary>None.</summary>
+        <summary>A mask covering all modifier types.</summary>
         <remarks>
         </remarks>
       </Docs>
@@ -235,4 +235,4 @@ Like the X Window System, GDK supports 8 modifier keys and 5 mouse buttons.</sum
       </Docs>
     </Member>
   </Members>
-</Type>
+</Type>
\ No newline at end of file
diff --git a/doc/en/Gdk/RgbCmap.xml b/doc/en/Gdk/RgbCmap.xml
index db8b9b78b..d76921a50 100644
--- a/doc/en/Gdk/RgbCmap.xml
+++ b/doc/en/Gdk/RgbCmap.xml
@@ -8,7 +8,7 @@
   </AssemblyInfo>
   <ThreadSafetyStatement>Gtk# is thread aware, but not thread safe; See the <link location="node:gtk-sharp/programming/threads">Gtk# Thread Programming</link> for details.</ThreadSafetyStatement>
   <Docs>
-    <summary>To be added</summary>
+    <summary>A private data structure which maps color indices to actual RGB colors.</summary>
     <remarks />
   </Docs>
   <Base>
@@ -86,4 +86,4 @@
       </Docs>
     </Member>
   </Members>
-</Type>
+</Type>
\ No newline at end of file