> For the complete documentation index, see [llms.txt](https://emacs-lisp.ivory.cafe/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://emacs-lisp.ivory.cafe/han-shu/13.2-lambda-biao-da-shi-working/13.2.4-han-shu-de-wen-dang-zi-fu-chuan.md).

# 13.2.4 函数的文档字符串