public void appendData(char[] data, int start, int howmany) throws DOMException {
   if (cdata == null) cdata = new XMLString(data, start, howmany);
   else cdata.append(data, start, howmany);
 }
 public void appendData(String arg) throws DOMException {
   if (cdata == null) cdata = new XMLString(arg.toCharArray());
   else cdata.append(arg);
 }