Currently, to create the effect of moving from one form to another (e.g. from a customers list to a customer detail form) you must create the first form with a ListX module on one page, and the second form with a separate ListX module on a different page. Usually I make the second page hidden to avoid the user accidentally browsing to it.

Can you make it possible to create a collection of ListX forms under one module? This way an entire ListX application could be created with one module and one page.

Yes - actually - this is in the scope architecture for ListX 2.0 which will be coming in the next few months. Essentially it will provide, among other things, the ability to Switch configurations on the fly, as well as utilize the ctl=ControlKey Querystring automatically to switch configurations. The major adjustment with 2.0 is that the configurations will no longer be specifically Tab/ModuleID centric. Instead - all configurations will be Named, and you can use any number of configurations at any time on any module. ListX 1.7.3 will be out next week which will not provide this change - but it will provide a host of other improvements.

Excellent news, does that mean a given configuration can be used in multiple places in a site?