> For the complete documentation index, see [llms.txt](https://twig.shujuwajue.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://twig.shujuwajue.com/twig-2x/fu-5f55-he-xin-kuo-zhan.md).

# 附录\*核心扩展

核心扩展定义了Twig的所有核心特性:

* Tags;
* Filters;
* Functions;
* Tests.