  *  images using Portable Network Graphics (PNG) lossless compression.
  *
  *  <p>For the PNG specification, see http://www.w3.org/TR/PNG/</p>.
+ *  
+ *  @langversion 3.0
+ *  @playerversion Flash 9
+ *  @playerversion AIR 1.1
+ *  @productversion Flex 3
  */
 public class PNGEncoder implements IImageEncoder
 {

     *  @param bitmapData The input BitmapData object.
     *
     *  @return Returns a ByteArray object containing PNG-encoded image data.
     */
    public function encode(bitmapData:BitmapData):ByteArray
    {

     *  as four bytes in ARGB format.
     *
     *  @return Returns a ByteArray object containing PNG-encoded image data. 
     *  
     *  @langversion 3.0
     *  @playerversion Flash 9
     *  @playerversion AIR 1.1
     *  @productversion Flex 3
     */
    public function encodeByteArray(byteArray:ByteArray, width:int, height:int,
									transparent:Boolean = true):ByteArray
