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
1. 总则
本文件是嵌入式FAT文件系统的说明文件，嵌入式FAT文件系统开发及使用人员均可阅读本文件，以掌握和使用本文件系统。
2. 参考文件
1) Microsoft Hardware White Paper FAT: General Overview of On-Disk Format
2) Microsoft Hardware White Paper Long Filename Specification
