      *  they are added to the Groups item list.
      * 
      *  @default 0
+	 *  
+	 *  @langversion 3.0
+	 *  @playerversion Flash 9
+	 *  @playerversion AIR 1.1
+	 *  @productversion Flex 3
 	 */
 	function set layer(value:Number):void;
 	function get layer():Number;

     *  the object to which they belong.
     *  By convention, non-visual item objects use an <code>owner</code>
     *  property to reference the object to which they belong.
     */
    function get parent():DisplayObjectContainer;
    

     * 
     *  @default true
     *  @see ILayoutElement#includeInLayout
     *  
     *  @langversion 3.0
     *  @playerversion Flash 9
     *  @playerversion AIR 1.1
     *  @productversion Flex 3
     */
    function get visible():Boolean;
    function set visible(value:Boolean):void;
