# 什么是 Markdown?

[Markdown](http://daringfireball.net/projects/markdown/) 是一种在网站上设置文字样式的方法。你可以控制文档的显示；将文字格式化为粗体或斜体、添加图像和创建列表是我们可以使用 Markdown 执行的一小部分操作。大多数情况下，Markdown 只是常规文本，其中包含一些非字母字符，如 `#` 或 `*`。

在 GitHub 上的大多数地方你都可以使用 Markdown：

* [Gists](https://gist.github.com/)
* Issues 和拉取请求中的评论
* 在扩展名为 `.md` 或 `.markdown` 的文件中

更多相关信息请看 *GitHub 帮助* 中的“[在 GitHub 上书写](https://help.github.com/categories/writing-on-github/)”。


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://github.highlight.ink/mastering-markdown/what-is-markdown.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.