Board Thread:Support Requests - Designing Your Wiki/@comment-37764732-20200618124606/@comment-1038387-20200618163849

I've seen wikis use an "Expansion" notice at the top, but never a stub. Maybe they use it as stub in all but name. The stub template on the starter wiki is just a line in italics like WP has.

There's not really a rule to this, but maybe a best practice or two.

An interrobang is not an internationally understood symbol, and it's definitely not one instantly associated with expanding an article.