     
     /**
      *  The 0-based row index of the origin of the cell region.  
-     *  A value of -1 indicates "not set".
+     *  A value of -1 indicates that the value is not set.
      * 
      *  @default -1
      * 
      *  @langversion 3.0
      *  @playerversion Flash 10
-     *  @playerversion AIR 2.0
+     *  @playerversion AIR 2.5
      *  @productversion Flex 4.5
 
      */

    
/**
 *  The CellRegion class defines a data structure 
 *  used by the spark data grid classes to represent a rectangular region of
 *  cells in the DataGrid control. The origin of the region is specified with
 *  the rowIndex and columnIndex and the extent of the region is specified with
 *  the rowCount and the columnCount.
 *
 *  @see spark.component.DataGrid
 *  @see spark.component.Grid
 *  
 *  @langversion 3.0
 *  @playerversion Flash 10
 *  @playerversion AIR 2
 *  @productversion Flex 4.5
 */
public class CellRegion

     * 
     *  @langversion 3.0
     *  @playerversion Flash 10
     *  @playerversion AIR 2.5
     *  @productversion Flex 4.5
     */
    public function get rowCount():int
