      *  This property does not affect the layout's measured size.
      *  
      *  @default "top"
+     *  
+     *  @langversion 3.0
+     *  @playerversion Flash 10
+     *  @playerversion AIR 1.5
+     *  @productversion Flex 4
      */
     public function get verticalAlign():String
     {

     *  Returns the current number of visible elements.
     * 
     *  @default -1
     */
    public function get columnCount():int
    {

     *  just one element, the gap has no effect on the layout.
     * 
     *  @default 6
     *  
     *  @langversion 3.0
     *  @playerversion Flash 10
     *  @playerversion AIR 1.5
     *  @productversion Flex 4
     */    
    public function get gap():int
    {
