Abstract

A visual formalism for the presentation of a real time logic is introduced, motivated, and evaluated. The visual formalism has been designed following a user-centered usability engineering process, targeted to the students of higher education courses in software engineering. On the one hand, heuristic design was applied to maximize consistency, i.e. to minimize the complexity of the visual metaphor mapping textual sentences to the visual representation. On the other hand, individual metaphoric assumptions were defined by prototyping and exposing alternative graphical representations to a representative sample of the target community of expected users.

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