From the Microsoft Dynamics NAV Blogs: SP1 Action Categories; Transform a ListPlus Page Into a FactBox; Create Handler Functions in NAV Testing Framework
AV 2009 SP1 Action Categories: Waldo defines and explains how to work with action categories in the development environment, in configuration mode, and how to make your own categories.
How to Transform a ListPlus Page Into a FactBox: The NAV Team Blog provides the basics on how to integrate the Item Availability by Location directly as FactBoxes: “In several places in NAV 2009 SP1, it has been used ListPlus pages in order to display two-dimension matrix. Those ListPlus Pages may be customized in order to be arranged as FactBoxes directly inside a main page (Document, Worksheet, etc.). The main concept of those kind of two-dimensional matrix pages is that they have a Page Part with a List that is updated every time a value is changed in the analysis parameter bounded to fields and/or variables that belongs directly to the ListPlus.”