  *  TextFlowUtil is a utility class which provides methods
  *  for importing a TextFlow from, and exporting a TextFlow to,
  *  the markup language used by the Text Layout Framework.
+ *  
+ *  @langversion 3.0
+ *  @playerversion Flash 10
+ *  @playerversion AIR 1.5
+ *  @productversion Flex 4
  */
 public class TextFlowUtil
 {

     *  The default value is <code>WhiteSpaceCollapse.COLLAPSE</code>.
     *
     *  @return A new TextFlow instance created from the markup.
     */
	public static function importFromXML(
        markup:XML, whiteSpaceCollapse:String = "collapse"):TextFlow
    {
        initClass();

     * 
     *  @return XML containing Text Layout Framework
     *  markup language.
     *  
     *  @langversion 3.0
     *  @playerversion Flash 10
     *  @playerversion AIR 1.5
     *  @productversion Flex 4
     */
    public static function export(textFlow:TextFlow):XML
    {
