What's in a CAB Module?

One of the root components of a CAB Application is the module.  So what is a module, exactly?

A Module is basically a collection of WorkItems.  Since WorkItems are generally 1:1 with use cases, then modules are a package for related use cases.

Modules get loaded by the application Shell, via the ProfileCatalog.xml file.  When you are structuring your solution, you do not include a project reference to the module project in your shell project.

One benefit of doing this is that you can create new modules and load them into a shell without recompiling the main shell solutions.  You could easily package up a patch which included a new ProfileCatalog.xml and a dll as a zip file.

Modules also help you organize your WorkItems into logical units so that they become more managable.