704 AutoCAD Drawing R10 DWG (R10) DWG Image (Vector) None The AutoCAD Drawing format is a vector graphics format, and is the native file format of AutoDesk's AutoCAD family of products. The format is proprietary and AutoDesk does not make details of its structure public. The information contained here is derived primarily from the OpenDWG Alliance's reverse-engineered documentation of the format, and should not therefore be regarded as definitive. The basic structure of a DWG file comprises a header section, a drawing class definitions section, the drawing object data, a drawing object map, which contains the locations of all the objects in the drawing, and an image data section, which may contain a raster image of the drawing in either Windows Bitmap (BMP) or Windows Metafile (WMF) format. DWG version 10 is the version of the format associated with Release 10 of AutoCAD. Binary Little-endian (Intel) 01 Oct 1988 1 Digital Preservation Department / The National Archives 11 Mar 2005 02 Aug 2005 fmt/31 PUID image/vnd.dwg MIME dwg File extension 93 AutoCAD Drawing Format R10 Header 1 Absolute from BOF 0 414331303036 Has lower priority than 720 Drawing Interchange File Format (ASCII) Is previous version of 705 AutoCAD Drawing Is subsequent version of 703 AutoCAD Drawing