> For the complete documentation index, see [llms.txt](https://docs.atom.codes/sprout/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.atom.codes/sprout/advanced.md).

# Advanced

- [How to create a handler](https://docs.atom.codes/sprout/advanced/how-to-create-a-handler.md)
- [How to create a registry](https://docs.atom.codes/sprout/advanced/how-to-create-a-registry.md)
- [How to create a registry group](https://docs.atom.codes/sprout/advanced/how-to-create-a-registry-group.md)