Use DefaultAction to associate an adapter action with the Web page module. Server-side script can reference this action by calling on the default action of the Web page. 

Typically, the default action sets up parameters that appear in HTTP requests for the Web page. By adding a default action, the parameters can then appear in requests for the Web page, which the page producer in the Web page module uses in generating its page. In addition, this action can be called to set up parameters in redirections to this Web page. 

PageProducer