A prototype is tailored to visualize and demonstrate the user experience. Before we can develop the demonstration, we really need to nail down key user tasks which is, after all, the reason for the existence of the application. Since the scope of this book limits our discussion of the topic to the context of Axure, I will focus on the aspect of creating task flow diagrams.
Task flow diagrams are a model, an abstraction of the Ping-Pong exchange that makes up user-system interaction. These diagrams also play an important role in: