You can see a live example of the practice on my user page on the IndieWeb wiki at https://indieweb.org/User:Boffosocko.com#Backlinks along with the code I used by clicking on the edit tab. The effect is rather nice, particularly when put into columns when there are lots of entries. I’ll have to look into automatically coding something like this into every page now, but being able to do it manually is most of the battle, right?
Doing this along with adding display for external webmentions quickly vaults MediaWiki to a solidly first class web-enabled digital commonplace book/digital garden/Memex/zettelkasten tool that can communicate with other similarly enabled tools. (Now if only Webmention were supported natively on MediaWiki… but there are definitely ways around this in the meanwhile.)
To go the extra mile, I know there’s the ability to interlink wikis with some custom syntax or even to show hovercards within a wiki. Both MediaWiki and Wikipedia already allow this after enabling page previews using hovercards in 2018. (I’ll have to check out if one could do hovercards across wikis as well!?!)
I’ve slowed down some of my experiments with my personal MediaWiki in preference to using Obsidian lately. Perhaps, for working in public, I’m going to have to resume some of my experiments and/or figure out a way to mirror the content?