Dialog design deals with the movement or flow, between procedures and procedure steps. Screens, dialog, and procedure logic are best designed in parallel. You can then refine the screens and dialogs. Prototyping is an effective technique for refining screens and dialogs. When the initial design is stable, you can complete detailed procedure logic and finalize the screens and dialog flows.
Together, the screen designs, dialog, and procedure logic yield fully detailed displays, a completed dialog flow diagram, and action diagrams that are the basis for generating a completed system.
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