From HomoExcelsior

1. The making of drawings in accordance with the rules of mathematics, as in engineering or architecture. 2. Calculations, as of structural stress, from such drawings. 3. The pictorial representation and manipulation of data, as used in computer-aided design and computer-aided manufacture, in typesetting and the graphic arts, and in educational and recreational programs. 4. The process by which a computer displays data pictorially.

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