     /**
      *  Return the preferred bounds height of the grid's typicalItem when rendered with the item renderer 
      *  for the specified column.  If no value has yet been specified, return NaN.
+     * 
+     *  @langversion 3.0
+     *  @playerversion Flash 10
+     *  @playerversion AIR 2.0
+     *  @productversion Flex 4.5
      */    
     public function getTypicalCellHeight(columnIndex:int):Number
     {

    /**
     *  Removes any nodes that occupy the indices between startRow
     *  and startRow + count.
     */
    public function clearRows(startRow:int, count:int):void
    {

    //--------------------------------------------------------------------------
    
    /**
     *  Constructor.
     * 
     *  @langversion 3.0
     *  @playerversion Flash 10
     *  @playerversion AIR 2.0
     *  @productversion Flex 4.5
     */
    public function GridDimensions()
    {
