Introduction to the CSD - Unit and Data Symbols

The CSD unit symbols, which are patterned after the Ada unit symbols popularized by Grady Booch, provide the user of the CSD the option of specializing the program unit identified by the CSD. The unit symbols may be used either independently or in conjunction with the box symbols, as was shown on the overview page of this introduction.

The symbol shown above represents a function body in C.

The darkened ellipse denotes variable and function declarations.

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