> For the complete documentation index, see [llms.txt](https://handbook.bsdcn.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://handbook.bsdcn.org/qian-yan.md).

# 前言

- [致读者](https://handbook.bsdcn.org/qian-yan/zhi-du-zhe.md)
- [第四版](https://handbook.bsdcn.org/qian-yan/di-si-ban.md)
- [第三版](https://handbook.bsdcn.org/qian-yan/di-san-ban.md)
- [第二版（2004）](https://handbook.bsdcn.org/qian-yan/di-er-ban-2004.md)
- [第一版（2001）](https://handbook.bsdcn.org/qian-yan/di-yi-ban-2001.md)
- [本书的组织结构](https://handbook.bsdcn.org/qian-yan/ben-shu-de-zu-zhi-jie-gou.md)
- [本书中使用的一些约定](https://handbook.bsdcn.org/qian-yan/ben-shu-zhong-shi-yong-de-yi-xie-yue-ding.md)
- [致谢](https://handbook.bsdcn.org/qian-yan/zhi-xie.md)