The Flow view updates dynamically as you modify your CCL or add or remove adapters and streams.
Clicking any component of your project in the Explorer view selects the component in the Flow view, and double-clicking any component in the Flow view, except an external database, causes its information to be displayed in the Explorer, Editor, and Properties views. Furthermore, if a query module includes nested submodules, double-clicking the submodule's icon in the Flow view displays a detailed view of the submodule's contents.