      *
      *  @param columnIndex The 0-based column index of the cell.
      * 
-     *  @return True if no errors, or false if <code>rowIndex</code> 
+     *  @return <code>true</code> if if no errors.
+     *  <code>false</code> if <code>rowIndex</code> 
      *  or <code>columnIndex</code> is invalid or the <code>selectionMode</code> 
      *  is invalid.     
      *  

    }
    
    /**
     *  If necessary, set the verticalScrollPosition and horizontalScrollPosition 
     *  properties so that the specified cell is completely visible. If rowIndex
     *  is -1 and columnIndex is specified, then just adjust the horizontalScrollPosition
     *  so that the specified column is visible. If columnIndex is -1 and rowIndex
     *  is specified, then just adjust the verticalScrollPosition so that the specified
     *  row is visible.
     * 
     *  @param rowIndex The 0-based row index of the item renderer's cell, or -1 to specify a column.
     *  @param columnIndex The 0-based column index of the item renderer's cell, or -1 to specify a row.
     *  
     *  @langversion 3.0

    }
    
    /**
     *  Returns the current pixel bounds of the specified row, or null if no such row exists.
     *  Row bounds are reported in grid coordinates.
     *
     *  <p>If all of the columns for the the specfied row and all of the rows preceeding 
     *  it have not yet been scrolled into view, the returned bounds may only be an approximation, 
     *  based on all of the columns' <code>typicalItem</code>s.</p>
     * 
     *  @param rowIndex The 0-based index of the row.
     * 
     *  @return A <code>Rectangle</code> that represents the row's pixel bounds, or null.
     *  
     *  @langversion 3.0
     *  @playerversion Flash 10
