Index: /trunk/doc/manual/en_US/user_VBoxManage.xml
===================================================================
--- /trunk/doc/manual/en_US/user_VBoxManage.xml	(revision 55168)
+++ /trunk/doc/manual/en_US/user_VBoxManage.xml	(revision 55169)
@@ -1470,4 +1470,15 @@
         </glossdef>
       </glossentry>
+
+      <glossentry>
+        <glossterm><computeroutput>separate</computeroutput></glossterm>
+
+        <glossdef>
+          <para>Starts a VM with detachable UI (technically it is a headless VM
+            with user interface in a separate process). This is an experimental
+            feature as it lacks certain functionality at the moment (e.g. 3D
+            acceleration will not work).</para>
+        </glossdef>
+      </glossentry>
     </glosslist>
 
Index: /trunk/src/VBox/Frontends/VBoxManage/VBoxManageHelp.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VBoxManage/VBoxManageHelp.cpp	(revision 55168)
+++ /trunk/src/VBox/Frontends/VBoxManage/VBoxManageHelp.cpp	(revision 55169)
@@ -440,5 +440,5 @@
         if (fVBoxSDL)
             RTStrmPrintf(pStrm, "|sdl");
-        RTStrmPrintf(pStrm, "|headless]\n");
+        RTStrmPrintf(pStrm, "|headless|separate]\n");
         RTStrmPrintf(pStrm,
                      "\n");