Some of the artifacts the UX team is responsible for are
Screens and content descriptions
Navigational paths through the screens
These artifacts are developed by the UX team (Figure 9-1) and are captured in the UX model of the system. The UX model is a separate model because it is a complete view of the system from a particular viewpoint; in this case, of the system through its screens. The architecturally significant properties of the screens and their navigational relationships are the principal elements in the UX model. Use case realizations, or UML collaborations, capture storyboard scenarios of the application in terms of the system's screens.