strengthening AutoCAD's market penetration.

Subsequent to AutoCAD Release 13, the company stopped supporting the Unix environment and the Apple Macintosh platform. After AutoCAD Release 14 (R13 was last DOS & Unix release), first shipped in 1997, Autodesk discontinued development under DOS, and focused exclusively on Microsoft Windows.

AutoCAD has grown to become the most widely used CAD program for 2D non-specialized applications.

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