> For the complete documentation index, see [llms.txt](https://docs.radicalframework.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.radicalframework.com/release-1/ui-composition.md).

# UI Composition

- [UI Composition](https://docs.radicalframework.com/release-1/ui-composition/index.md)
- [Region content lifecycle](https://docs.radicalframework.com/release-1/ui-composition/index/region-content-lifecycle.md)
- [TabControl region](https://docs.radicalframework.com/release-1/ui-composition/index/tabcontrol-region.md)
- [Create a custom region](https://docs.radicalframework.com/release-1/ui-composition/index/create-a-custom-region.md)