     //--------------------------------------------------------------------------
     
     /**
+     *  Methods creates an object that should be returned to the
+     *  previous screen when this view is popped off a navigator's
+     *  stack.
+     * 
+     *  @return null
      * 
      *  @langversion 3.0
      *  @playerversion Flash 10.1

        _navigationGroupLayout = value;
        dispatchEvent(changeEvent);
    }
    
    //----------------------------------
    //  title
    //----------------------------------

    //----------------------------------
    
    /**
     *  @private
     * 
     *  Determines if the current view can be removed by
     *  a navigator.  The default implementation dispatches
     *  a <code>FlexEvent.REMOVING</code> event.  If
     *  preventDefault() is called on the event, this property
     *  will be set to false.
     * 
     *  @return Returns true if the screen can be removed
     *  
     *  @langversion 3.0
     *  @playerversion Flash 10.1
     *  @playerversion AIR 2.5
     *  @productversion Flex 4.5
     */    
    mx_internal function get canRemove():Boolean
    {
