AVID:Requests for Comment/Add a rollover text function
From the Audiovisual Identity Database, the motion graphics museum
Rollover text function request
Rollover text (text that appears when you hover your cursor on specific text [indicated by, say, a dotted underline] on desktop, or tap on that text on mobile) could be practical for, say, showing the romanization of foreign languages, while not wasting too much page space.
Ex.: underlined text that says "東宝株式会社", but when you hover your cursor on it, the rollover will show "Tōhō Kabushikigaisha". This is a feature I've seen being used by other MediaWiki-powered wikis, so I see the possibility of its implementation here.