      *  The number of RadioButtons that belong to this RadioButtonGroup.
      *
      *  @default "undefined"
+     *  
+     *  @langversion 3.0
+     *  @playerversion Flash 9
+     *  @playerversion AIR 1.1
+     *  @productversion Flex 3
      */
     public function get numRadioButtons():int
     {

 *  You can also set a handler for individual RadioButton controls.
 *
 *  @eventType mx.events.ItemClickEvent.ITEM_CLICK
 */
[Event(name="itemClick", type="mx.events.ItemClickEvent")]


     *  <code>ButtonLabelPlacement.BOTTOM</code>, and <code>ButtonLabelPlacement.TOP</code>.</p>
     *
     *  @default "right"
     *  
     *  @langversion 3.0
     *  @playerversion Flash 9
     *  @playerversion AIR 1.1
     *  @productversion Flex 3
     */
    public function get labelPlacement():String
    {
