# Thylacine > Notes on an operating system. Thylacine is a Plan 9-heritage operating system for ARM64; these are technical articles from building it, written by Michal Frdlik. Every article is available as clean Markdown at its own URL plus `index.md`, and the whole site is concatenated in [llms-full.txt](https://aip.treeso.net/llms-full.txt). Canonical HTML pages carry the same text with schema.org TechArticle metadata. There is no JavaScript anywhere on the site and nothing behind a login. ## Articles - [Type specimen](https://aip.treeso.net/articles/specimen/index.md): Every element the templates render, on one page. Once the real articles land, set hidden = true rather than deleting it -- it is the page you check a CSS change against. (2026-08-17; HTML: https://aip.treeso.net/articles/specimen/) - [Colophon](https://aip.treeso.net/articles/colophon/index.md): How this site is built, and the one thing about it that is not a stylistic choice. (2026-08-16; HTML: https://aip.treeso.net/articles/colophon/) ## Optional - [Article index (HTML)](https://aip.treeso.net/articles/) - [Atom feed](https://aip.treeso.net/atom.xml) - [Sitemap](https://aip.treeso.net/sitemap.xml) - [Author](https://github.com/apology-is-policy)