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

# Concepts

- [Lowering](https://docs.hylo-lang.org/hylo-ir/concepts/lowering.md)
- [Modules](https://docs.hylo-lang.org/hylo-ir/concepts/modules.md)
- [Lowered functions](https://docs.hylo-lang.org/hylo-ir/concepts/lowered-functions.md)
- [Operands](https://docs.hylo-lang.org/hylo-ir/concepts/operands.md)
- [Abstract machine](https://docs.hylo-lang.org/hylo-ir/concepts/abstract-machine.md)