AutoCAD is a software application for computer-aided design (CAD) and drafting. The software supports both 2D and 3D formats. The native file format of AutoCAD is .dwg. This and, to a lesser extent, its interchange file format DXF, have become de facto, if proprietary, standards for CAD data interoperability. AutoCAD supports a number of APIs for customization and automation. Associative Array, Model Documentation.

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