anchor.diff:        <P>
         <input type="submit" name="ok" value="Save" />
         &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  +      <input type="submit" name="preview" value="Preview" />
  +      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
         <A HREF="<%=wiki.getBaseURL()%>Wiki.jsp?page=<%=pageurl%>">Cancel</A>
         <P>
         Here's a short reminder on what elements you have at your disposal:
  
positive.code:     String pageurl = wiki.encodeName( pagereq );
  
      String action = request.getParameter("action");
  
      //
      //  Set the response type before we branch.
  
negative.code: 
          response.sendRedirect(wiki.getBaseURL()+"Wiki.jsp?page="+pageurl);
          return;
      }
      else if( preview != null )
      {
          log.debug("Previewing "+pagereq);
          pageContext.forward( "Preview.jsp" );
      }
  
      log.info("Editing page "+pagereq+". User="+request.getRemoteUser()+", host="+request.getRemoteHost() );
  