I just noticed the topic of Application Modules:
"A new feature of
Struts 1.1 is the concept of application modules. Application modules allow a single Struts application to be split into multiple modules, each with its own Struts configuration file,
JSP pages, Actions, and so on."
I went over few struts books already, I don't recall any of them goes into detail about Application Modules. How often is it done in real world applicatoin development?