> For the complete documentation index, see [llms.txt](https://docs.codebattles.ru/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.codebattles.ru/en_v3/how-the-system-works.md).

# How the System Works

- [Architecture](https://docs.codebattles.ru/en_v3/how-the-system-works/arkhitektura.md)
- [Security](https://docs.codebattles.ru/en_v3/how-the-system-works/bezopasnost.md)
- [Code Line Metrics](https://docs.codebattles.ru/en_v3/how-the-system-works/metriki-strok-koda.md)