code: private String checkForwardto(final HttpServletRequest request) throws Throwable {
      String reqpar = request.getParameter("forwardto");
      return reqpar;
    }
docs: Check for action forwarding
  We expect the request parameter to be of the form<br/>
  forward=name<p>.
  
  @param request  Needed to locate session
  @return String  forward to here. null if no forward found.
  @throws Throwable