+ <popup action="editorTabbableButtonMenu">
+ <menuitem action='show-editor'/>
+ <menuitem action='hide-editor'/>
+ <menuitem action='attach-editor'/>
+ <menuitem action='detach-editor'/>
+ </popup>
+
+ <popup action="mixerTabbableButtonMenu">
+ <menuitem action='show-mixer'/>
+ <menuitem action='hide-mixer'/>
+ <menuitem action='attach-mixer'/>
+ <menuitem action='detach-mixer'/>
+ </popup>
+
+ <popup action="preferencesTabbableButtonMenu">
+ <menuitem action='show-preferences'/>
+ <menuitem action='hide-preferences'/>
+ <menuitem action='attach-preferences'/>
+ <menuitem action='detach-preferences'/>
+ </popup>
+