Fun indeed. And you're right -- because those triangles were used to expand folder contents.
Upvoting, hmm... well together with downvoting, you could appropriate the number spinner/stepper widget [1], the tiny little up and down buttons attached to the right side of a number field? I'm not sure that was ever native to the Platinum design language [2], but IIRC Microsoft Office at least used it at the time.
EDIT: whoops, cmrdporcupine's sibling comment basically says the same thing. Leaving this comment here in case anyone's interested in the additional links.
Comments
Fun indeed. And you're right -- because those triangles were used to expand folder contents.
Upvoting, hmm... well together with downvoting, you could appropriate the number spinner/stepper widget [1], the tiny little up and down buttons attached to the right side of a number field? I'm not sure that was ever native to the Platinum design language [2], but IIRC Microsoft Office at least used it at the time.
[1] https://en.wikipedia.org/wiki/Spinner_(computing)
[2] https://en.wikipedia.org/wiki/Appearance_Manager
EDIT: whoops, cmrdporcupine's sibling comment basically says the same thing. Leaving this comment here in case anyone's interested in the additional links.