      *  should  communicate using sandbox bridges.
      *  If <code>false</code> the system manager may directly call
      *  other managers directly via references.
+     *  
+     *  @langversion 3.0
+     *  @playerversion Flash 9
+     *  @playerversion AIR 1.1
+     *  @productversion Flex 3
      */
     function useSWFBridge():Boolean;
     

	 *  clicking in another windows which would normally 
	 *  activate the FocusManager in that window.  The PopUpManager
	 *  modifies this count as it creates and destroy modal windows.</p>
	 */
	function get numModalWindows():int;


     *  @param layer Name of IChildList in SystemManager
     *
     *  @param child DisplayObject to add
     *  
     *  @langversion 3.0
     *  @playerversion Flash 9
     *  @playerversion AIR 1.1
     *  @productversion Flex 3
     */
    function removeChildFromSandboxRoot(layer:String, child:DisplayObject):void;
    
