740 Drawing Interchange File Format (Binary) R11/12 Binary DXF (R11/12) DXF Image (Vector) Full Binary DXF format is the binary encoded variant of the Drawing Interchange File Format, an exchange format for vector graphics developed by AutoDesk. They are probably the widely-used formats for exchanging vector data, and have become a de-facto industry standard. The format is owned by AutoDesk and typically changes with each release of their AutoCAD family of products. DXF files contain a tagged representation of the vector data. The structure comprises a Header section, followed by sections containing data on Classes, Tables, Blocks, Entities and, optionally, thumbnail images. Each section contains a series of data elements. each preceded by a group code tag, which indicates the type of data element. Binary DXF was first developed in AutoCAD Release 10. It should not be confused with the DXB format - this is an entirely separate AutoDesk format for binary encoding vector graphics. Binary DXF Release 11/12 is the version of the format associated with Releases 11 and 12 of the AutoCAD software. Binary Little-endian (Intel) 01 Oct 1990 1 Digital Preservation Department / The National Archives 11 Mar 2005 25 Sep 2020 fmt/81 PUID image/vnd.dxf MIME dxf File extension 134 Binary DXF R11/12 File header, header section with $ACADVER group code (AC1009), EOF marker 1 Absolute from BOF 0 4175746F4341442042696E617279204458460D0A1A00*0053454354494F4E0002{0-1}48454144455200*09{0-1}24414341445645520001{0-1}41433130303900*00454E4453454300 1 Absolute from EOF 0 00454F4600 Equivalent to 721 Drawing Interchange File Format (ASCII) Has priority over 2212 Drawing Interchange Format (Binary) Is previous version of 706 AutoCAD Drawing Is previous version of 741 Drawing Interchange File Format (Binary) Is subsequent version of 739 Drawing Interchange File Format (Binary)