> For the complete documentation index, see [llms.txt](https://ut.orels.sh/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ut.orels.sh/v0.x/extras.md).

# Legacy

- [Migration to v0.4.0](https://ut.orels.sh/v0.x/extras/migration-to-v0.4.0.md)
- [UT Controllers](https://ut.orels.sh/v0.x/extras/ut-controllers.md): Create custom behaviour UIs for your own code