      *  @return Returns the union of <code>rect</code> and
      *  <code>Rectangle(left, top, right - left, bottom - top)</code>.
      *  Note that if rect is non-null, it will be updated to reflect the return value.
+     *  
+     *  @langversion 3.0
+     *  @playerversion Flash 9
+     *  @playerversion AIR 1.1
+     *  @productversion Flex 3
      */
     public static function rectUnion(left:Number, top:Number, right:Number, bottom:Number,
                                      rect:Rectangle):Rectangle

     *  
     *  @return Point(x,y) or null if no solution exists.
     * 
     */
    static public function calcUBoundsToFitTBounds(w:Number, 
                                                   h:Number,

     *
     *  @return returns Point(x,y)
     *
     *  
     *  @langversion 3.0
     *  @playerversion Flash 9
     *  @playerversion AIR 1.1
     *  @productversion Flex 3
     */
    static private function solveSystem(a:Number, 
                                        c:Number, 
