What we want to do is to generate the xml output when user clicking on achannel.However, we found even if we output xml format in the portlet override, thereare still have additional html tags which generated by vignette by grids,secondary page. What can we do to removed the additional html tags?Also, we tried to do a request forward in the portlet override, but looks thatalso not working? Is it possible to do a request forward in portlet overrideand remain the url in address bar with no change?