/**
  * Writes data
  * @param	string	data
  * @param	string	ecode data (TRUE) or not (FALSE)
  * @param	string	escape data (TRUE) or not (FALSE)
  * @access	public
  */
 function xmlData($data, $encode = TRUE, $escape = TRUE)
 {
     // encode
     if ($encode) {
         $data = $this->xmlEncodeData($data);
     }
     // escape
     if ($escape) {
         $data = ilXmlWriter::_xmlEscapeData($data);
     }
     $this->xmlStr .= $data;
 }