C2 DESCRIBING SYSTEMS

This section is concerned with the written comments and graphical illustrations that form the description of a system. The symbols and layout conventions referred to are those given in British Standards BS 4058:1987, BS 7738:1994 and in ISO 19501: 2005. Related topics can be found in Section A6 User interface and documentation, Section C1 Systems design and life cycle, Section C3 Programming concepts, Section C7 Describing programs and Section C8 Testing and running programs.

Software systems will require some modification during their lifetime. If this is to be done satisfactorily, it is vital that good, complete and understandable documentation is available. Requests to modify software may arise for a number of reasons, ...

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