DWG格式详细说明，支持版本R13、R14、R2000、R2004、R2007。

OpenDWG R13/R14/R2000/R2004/R2007 File Format Specification Version 4.0 这是有助于您做dwg文件方面开发的有用文档 这是有助于您做dwg文件方面开发的有用文档 这是有助于您做dwg文件方面开发的有用文档 这是有助于您做dwg文件方面开发的有用文档

The OpenDWG file format specification, from the Open Design Alliance, is based upon AutoCAD’s undocumented DWG file format. This specification includes versions from Release 13 up to and including R2004, and a partial descr iption of the 2007 format

OpenDWG R13/R14/R2000/R2004/R2007 FILE Format Specification AutoCAD 各版本的DWG格式文明规范，是分析CAD格式文件的必备资源。