=  Container region
\  Container region level
+  Specific region


= Root
   \ Desktop
      + Icons
      + Fullscreen Apps redirected
    
   \ User
      = Frame
         \ Background
         \ Content
            + Normal
               + Opaque
         \ Foreground
            + Decoration

  \ System
     + Expos
     + Dock/Panel
     + Glass
     + Clipboard Manager
     + Virtual Keyboard
     + Input Methods

  \ Cursor
     + Drag'n'Drop
     + Shape

  \ Screen
     + Saver
     + Lock
