      *  @see #verticalGap
      *  @see #rowHeight
      *  @see #justifyColumns
-     *  @default "none"
+     *  @default TileJustifyRows.NONE
      *  
      *  @langversion 3.0
      *  @playerversion Flash 10

                _columnCount = Math.max(_columnCount, Math.ceil(elementCount / Math.max(1, explicitRowCount)));
        }
    }

    /**
     *  @private

    //  orientation
    //----------------------------------

    private var _orientation:String = "rows";

    [Bindable("propertyChange")]
    [Inspectable(category="General", enumeration="rows,columns", defaultValue="rows")]

    /**
     *  Specifies whether elements are arranged row by row or
     *  column by column.
     *  ActionScript values can be <code>TileOrientation.ROWS</code> and 
     *  <code>TileOrientation.COLUMNS</code>.
     *  MXML values can be <code>"rows"</code> and <code>"columns"</code>.
     *
     *  @default TileOrientation.ROWS
     *  
     *  @langversion 3.0
     *  @playerversion Flash 10
