Hahah I never thought I would put lang="lb" in an article, but here we are. Also, yup, language code for Luxembourgish is lb, apparently lu belongs to Luba-Katanga, you are welcome for random knowledge.

Also maybe this is a good time to remind people that there is project for two screen reader voices in Luxembourgish: https://accessibilite.public.lu/en/news/2026-03-30-screenreaderLB.html