anchor.diff:  if a client will get an intermediate page or if he gets the result page
   directly.
   
  -===== Change windowhandler.html
  +===== Configuration
  +
  +====== Change windowhandler.html
   
   To customize the look and feel of the windowhandler.html, you can simply
   provide a own via:
  
positive.code:     public String getClientWindowHtml()
      {
          return "<html><body>Loading...</body></html>";
      }
  }
  -------------------------------------------------------------------
  
negative.code: 
  Each GET request results in an intermediate small html page which checks
  if the browser tab fits the requested windowId. When the windowId is
  valid, a unique token (called `dsrid`) will be generated for the current
  request and added to the URL. In addition a cookie with with the
  dsrid/dswid will be added. On the server side, the verified windowId
  will be extracted from the cookie. For POST request detection, the
  windowId will be added as hidden input to all forms.
  
  