         }
         
         //----------------------------------
-        //  selection for rows and TBD columns
+        //  selection for rows
         //----------------------------------    
         
         /**

        {
            gridSelection.preserveSelection = value;
        }
        
        //----------------------------------
        //  requireSelection

        
        //--------------------------------------------------------------------------
        //
        //  GridLayout Cover Methods, Properties
        //
        //--------------------------------------------------------------------------
		
        /**
         *  @copy spark.components.supportClasses.GridLayout#getVisibleRowIndices()
         *  
