Topic on Talk:Universal Language Selector/Compact Language Links

The language knowledge declaration via the Babel Template / Parser Function should be inspected too (if present). There, many Wikipedians offer the languages they know in a machine-readable format.

Thanks for the feedback @Mathelerner. Babel templates are a good source of information to consider since the user explicitly selected those. There is a ticket to support the idea where this can be tracked.

(Just going over old posts here... FYI, this was done.)