Application Model Overview : Page Flows

Page Flows
The Page Flow is a diagrammatic representation of the Pages and Actions in an application. It provides a top-level view of the application as well as a place to find and define application-wide features. The Page Flow file is a BPEL file, ending in the .bpel suffix. There is only one Page Flow file for each application.

ActiveGrid
ActiveGrid Documentation
Version 2.0