High-level design precisely allocates component or service (utility) behaviors and responsibilities. It also details relationships with other components. Highlevel design is completed prior to detailed design and implementation.
The high-level design documentation deliverable is a prose document with the following sections:
Discovery Interface Use
Representative Use Cases
Screen mockups are created for interesting graphical user interfaces. This includes all interfaces essential to fulfilling component or service responsibilities. Each screen mockup is accompanied by a decription of input and feedback, and how the view changes as work progresses.