1

Scope

The underlying concept of this International Standard is that diagrams and symbols defined herein can be helpful in representing software functions and transitions and in improving human communication. The areas covered by this International Standard are development, communication and review of software requir ement analysis and design.

This International Standard is effective in the following fields of software. Interactive software - To describe the representation of functions and transitions on s creens. Data communication software - To describe communication protocols and corresponding actions. Language/command - To describe the syntax.