> For the complete documentation index, see [llms.txt](https://baiyongan.gitbook.io/lsf-handbook/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://baiyongan.gitbook.io/lsf-handbook/part-vi-jing-yan-zong-jie-pian/chapter-12.md).

# Chapter 12