Terminology

We will be using the following terms when describing this framework extension:

Views: Views can be either desktop or drilldown style. Drilldown style views can be Selects or Zooms. These are the building blocks of your application.
View Stack: The view stack is an object that keeps track of application flow. It contains a stack of all of your forward navigated views. The top of the stack contains the currently displayed view – the top view.
The breadcrumb control provides a visual representation of your view stack. This is used so the user can visualize and control application flow.
Forward Navigation: Forward Navigation refers to the process of navigating from the current top view to a new view, which will become the new top view. The view being navigated to is sometimes referred to as the new view (most recently added).
Back Navigation: Back Navigation refers to closing the top view and re-displaying the previous view in the view stack. It may also refer to navigating back to any view in the view stack.
Invoking View: The invoking view is the view that is the top view at the start of forward navigation and is the second to top view when the navigation is complete. This is the view that invoked the top view.
Invoking Object: The invoking object is a handle to the object that started the navigation forward. Normally, this is an object within the invoking view.
Invoked View: The invoked view is the view that is being navigated to. During navigation, it is the new view. Once the navigation is complete, it becomes the top view.