# 第四版

当前版本的手册凝聚了工作组的长久努力，工作组一直在审查和更新手册中的所有内容。以下是自第四版手册以来的主要更新。

* 手册已从 [Docbook](https://docbook.org/) 转换为 [Hugo](https://gohugo.io/) 和 [AsciiDoctor](https://asciidoctor.org/)。
* 创建了 [FreeBSD 文档网站](https://docs.freebsd.org/)。
* 新增了 [Wayland](https://docs.freebsd.org/en/books/handbook/book/#wayland) 及有关在 FreeBSD 上安装和配置 Wayland 的信息。
* [书目](https://docs.freebsd.org/en/books/handbook/book/#bibliography)得到大规模更新。。


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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://book.bsdcn.org/hanbook/qian-yan/di-si-ban.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.