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

# Concepts

- [Checks](https://documentation.checksheet.app/concepts/checks.md)
- [Conditions](https://documentation.checksheet.app/concepts/conditions.md)
- [Values](https://documentation.checksheet.app/concepts/values.md)
- [Notifications](https://documentation.checksheet.app/concepts/notifications.md)