code: public void processingInstruction (String target, String data)
      throws SAXException
      {
      if (documentHandler != null)
          documentHandler.processingInstruction(target, data);
      }
docs: Adapt a SAX2 processing instruction event.
  
  @param target The processing instruction target.
  @param data The remainder of the processing instruction
  @exception org.xml.sax.SAXException The client may raise a
  processing exception.
  @see org.xml.sax.ContentHandler#processingInstruction