Widgets behave: e.g., the “elevator” of the sketched scrollbar can be dragged up & down. The designer may need to specify additional behavior to illustrate the sequencing between widgets. Transformation requires some guidance to finalize details of the UI (e.g., textual labels, colors) At this point, programmers can add callbacks and constraints that include the application-specific code to complete the application.
Quickly sketch a design idea Work on overall layout and structure (NOT look) Iterate on the design rapidly with design team
This is NOT just a sketching program. We also want behavior!
and after several iterations.... There aren’t many successful examples of supporting these early stages of UI design. Need to keep the fluidity of paper and still unleash the power of the computer. It is a hard problem and something like this has never been done before!!