> For the complete documentation index, see [llms.txt](https://ayakaleaf-pro.ayaka.space/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ayakaleaf-pro.ayaka.space/latex/zh-cn/wen-da/87-why-can-t-i-use-bullet-without-getting-a-syntax-error.md).

# 为什么我不能使用 \bullet 而不产生语法错误？

该 `\bullet` 该命令是为数学模式使用而定义的，因此你需要写 `$\bullet$` （或 `\(\bullet\)`) 来在文本中使用此命令。如果你使用 `\bullet` 在数学模式外使用它会产生错误 [`插入了缺少的 $`](/latex/zh-cn/latex-cuo-wu/25-missing-inserted.md).

或者， `\textbullet` 该命令可在数学模式外使用，无需美元符号或 `\(...\)`，如下例所示：

```latex
\documentclass{article}
\title{A random walk in \LaTeX}
\author{Overleaf Team}
\begin{document}
\maketitle
\section{In the beginning...}
此示例演示了在数学模式中使用 \verb|\bullet|，生成 \(\bullet\)；并在数学模式外使用 \verb|\textbullet|，也生成 \textbullet。
\end{document}
```

[在 Overleaf 中打开此示例](https://www.overleaf.com/docs?engine=pdflatex\&snip_name=Using+the+bullet+command\&snip=%5Cdocumentclass%7Barticle%7D%0A%5Ctitle%7BA+random+walk+in+%5CLaTeX%7D%0A%5Cauthor%7BOverleaf+Team%7D%0A%5Cbegin%7Bdocument%7D%0A%5Cmaketitle%0A%5Csection%7BIn+the+beginning...%7D%0AThis+example+demonstrates+using+%5Cverb%7C%5Cbullet%7C+in+math+mode%2C+producing+%5C%28%5Cbullet%5C%29+and+%5Cverb%7C%5Ctextbullet%7C+outside+math+mode%2C+also+producing+%5Ctextbullet.%0A%5Cend%7Bdocument%7D)

此示例生成如下输出：

![在 Overleaf 上使用 \bullet 和 \textbullet 命令](/files/3b3e36f574b5523ead9b2bf78ae6e6342f381c41)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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, and the optional `goal` query parameter:

```
GET https://ayakaleaf-pro.ayaka.space/latex/zh-cn/wen-da/87-why-can-t-i-use-bullet-without-getting-a-syntax-error.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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.