Index: /trunk/doc/manual/en_US/user_AdvancedTopics.xml
===================================================================
--- /trunk/doc/manual/en_US/user_AdvancedTopics.xml	(revision 48256)
+++ /trunk/doc/manual/en_US/user_AdvancedTopics.xml	(revision 48257)
@@ -2001,5 +2001,5 @@
           </glossdef>
         </glossentry>
-      
+
         <glossentry>
           <glossterm><computeroutput>Input</computeroutput></glossterm>
@@ -2008,5 +2008,5 @@
           </glossdef>
         </glossentry>
-      
+
         <glossentry>
           <glossterm><computeroutput>Update</computeroutput></glossterm>
@@ -2015,5 +2015,5 @@
           </glossdef>
         </glossentry>
-      
+
         <glossentry>
           <glossterm><computeroutput>Language</computeroutput></glossterm>
@@ -2022,5 +2022,5 @@
           </glossdef>
         </glossentry>
-      
+
         <glossentry>
           <glossterm><computeroutput>Display</computeroutput></glossterm>
@@ -2029,5 +2029,5 @@
           </glossdef>
         </glossentry>
-      
+
         <glossentry>
           <glossterm><computeroutput>Network</computeroutput></glossterm>
@@ -2036,5 +2036,5 @@
           </glossdef>
         </glossentry>
-      
+
         <glossentry>
           <glossterm><computeroutput>Extensions</computeroutput></glossterm>
@@ -2043,5 +2043,5 @@
           </glossdef>
         </glossentry>
-      
+
         <glossentry>
           <glossterm><computeroutput>Proxy</computeroutput></glossterm>
@@ -2058,5 +2058,4 @@
 
     </sect2>
-      
 
     <sect2>
@@ -2214,5 +2213,43 @@
       <screen>VBoxManage setextradata "VM name" GUI/RestrictedStatusBarIndicators</screen>
 
-  </sect2>
+    </sect2>
+
+    <sect2>
+      <title>Configure VM window visual modes</title>
+
+      <para>You can disable (i.e. black-list) certain VM visual modes:</para>
+      <screen>VBoxManage setextradata "VM name" GUI/RestrictedVisualStates OPTION[,OPTION...]</screen>
+
+      <para>where <computeroutput>OPTION</computeroutput> is one of the
+        following keywords:</para><glosslist>
+        <glossentry>
+          <glossterm><computeroutput>Fullscreen</computeroutput></glossterm>
+          <glossdef>
+            <para>Don't allow to switch the VM into fullscreen mode.</para>
+          </glossdef>
+        </glossentry>
+
+        <glossentry>
+          <glossterm><computeroutput>Seamless</computeroutput></glossterm>
+          <glossdef>
+            <para>Don't allow to switch the VM into seamless mode.</para>
+          </glossdef>
+        </glossentry>
+
+        <glossentry>
+          <glossterm><computeroutput>Scale</computeroutput></glossterm>
+          <glossdef>
+            <para>Don't allow to switch the VM into scale mode.</para>
+          </glossdef>
+        </glossentry>
+      
+      </glosslist>
+
+      <para>This is a per-VM setting. Any combination of the above is allowed. To restore
+        the default behavior, use</para>
+
+      <screen>VBoxManage setextradata "VM name" GUI/RestrictedVisualStates</screen>
+
+      </sect2>
 
       <sect2>
@@ -2358,4 +2395,5 @@
 
       </sect2>
+
       <sect2>
         <title>Action when terminating the VM</title>