- You can return any command from a factory, it will just processed by the portal. You can even add your own commands. - It is not related to JSR-168, it is how JBoss Portal implements its portal. It not really related to the portlet container itself (although some command trigger the portlet container like InvokeWindowActionCommand and such) - If you want to update the navigational state of the portlet window (its render parameters) you need to return rather an InvokeWindowRenderCommand with the proper ParametersStateString containing the render parameters. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3961808#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...