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. DWG 2010 file format introduced. Parametrics introduced. Mesh 3D solid modeling introduced.