Before we begin reviewing the use-cases, focusing on the user interface prototype, let's revisit the Unified Process model. Figure 6-1 shows the process model with the focus of the project on the Elaboration phase.
The user interface prototype serves many functions at this stage of the project:
It further refines the actor and use-case boundaries, clarifies any misconceptions, and provides missing details that remain to be collected.
It provides early feedback to the project sponsors of the many visual features that the application will provide.
It expands ...