     
     /**
      *  Number of columns in this row.
+     * 
+     *  @langversion 3.0
+     *  @playerversion Flash 10
+     *  @playerversion AIR 2.0
+     *  @productversion Flex 4.5
      */
     public function get numColumns():uint
     {

    }
    
    /**
     *  Returns the cell height at the specified index.
     *  
     *  @return the cell height at the given index. NaN if index
     *  is out of bounds.
     */
    public function getCellHeight(index:int):Number
    {

     *  Updates the height at the specified column.
     * 
     *  @return true if max height has changed.
     * 
     *  @langversion 3.0
     *  @playerversion Flash 10
     *  @playerversion AIR 2.0
     *  @productversion Flex 4.5
     */
    public function setCellHeight(index:int, value:Number):Boolean
    {
