AutoCAD is a software application for computer-aided design (CAD) and drafting. The software supports both 2D and 3D formats. The software is developed and sold by Autodesk, Inc., first released in December 1982 by Autodesk in the year following the purchase of the first form of the software by Autodesk founder John Walker. AutoCAD is Autodesk‘s flagship product and by March 1986 had become the most ubiquitous microcomputer design program in the world, utilizing functions such as “polylines” and “curve fitting”. Prior to the introduction of AutoCAD, most other CAD programs ran on mainframe computers or minicomputers, with each CAD operator (user) working at a graphical terminal or workstation. According to Autodesk company information, the AutoCAD software is now used in a range of industries, employed by architects, project managers and engineers, amongst other professions, and as of 1994 there had been 750 training centers established across the world to educate users about the company’s primary products.