> For the complete documentation index, see [llms.txt](https://overleaf-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://overleaf-pro.ayaka.space/latex/zh-cn/zhi-shi-ku/098-is-there-a-way-to-change-which-latex-file-is-previewed-my-project-involves-several-documents.md).

# 有没有办法更改预览的是哪个 LaTeX 文件？我的项目包含多个文档

目前，一个项目只能有一个主文件——也就是你打开该文档时会加载的那个文件。

编译另一个文件的一个简单方法是加入：

```latex
\input{other-file.tex}
```

把它放在主文件的第一行——甚至要放在文档类之前。这样我们就会改为编译那个文件，而 LaTeX 会忽略“主”文件的其余部分。


---

# 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://overleaf-pro.ayaka.space/latex/zh-cn/zhi-shi-ku/098-is-there-a-way-to-change-which-latex-file-is-previewed-my-project-involves-several-documents.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.