I've seen this on https://degwiki.com/wiki/edit/The_Insulated_World_(2018) and wonder how it's done. Thanks.
Topic on Project:Support desk
https://www.mediawiki.org/wiki/Manual:$wgActionPaths
I believe this is what I used, at least according to the chat with the server owner. :)
Thank you. Why had I never seen this before? :-)