脚注使您可以添加注释和参考，而不会使文档正文混乱。当您创建脚注时，带有脚注的上标数字会出现在您添加脚注参考的位置。读者可以单击链接以跳至页面底部的脚注内容。

要创建脚注参考，请在方括号（[^1]）内添加插入符号和标识符。标识符可以是数字或单词，但不能包含空格或制表符。标识符仅将脚注参考与脚注本身相关联-在输出中，脚注按顺序编号。

在括号内使用另一个插入符号和数字添加脚注，并用冒号和文本（[^1]: My footnote.）。您不必在文档末尾添加脚注。您可以将它们放在除列表，块引号和表之类的其他元素之外的任何位置。

  1. Here's a simple footnote,[^1] and here's a longer one.[^bignote]
  3. [^1]: This is the first footnote.
  5. [^bignote]: Here's one with multiple paragraphs and code.
  7.     Indent paragraphs to include them in the footnote.
  9.     `{ my code }`
  11.     Add as many paragraphs as you like.

呈现的输出如下所示：

Here’s a simple footnote,[^1] and here’s a longer one.[^bignote]

[^1]: This is the first footnote.

[^bignote]: Here’s one with multiple paragraphs and code.

  1. Indent paragraphs to include them in the footnote.
  3. `{ my code }`
  5. Add as many paragraphs as you like.