> For the complete documentation index, see [llms.txt](https://docs-en.dmflow.chat/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs-en.dmflow.chat/domain/introduction.md).

# Introduction

The following will introduce the usage of Document Q\&A, Chit-chat, and Form Q\&A.

Domain naming currently only supports a-z\_ usage. Language currently only supports Chinese and English. Language includes some default answers that are not set, which will use the default language answers. For Form Q\&A, it will affect the search results."

<figure><img src="/files/Tyuc8tJlIiphAF3ex7XZ" alt=""><figcaption></figcaption></figure>