A question mark
? seems to be composed of two distinct pieces, top and bottom. Do these pieces have their own names, and if so, what are they?
If you're willing to go entirely by hearsay, a question mark has a curl, a lobe and a ball.
It's hearsay because I couldn't find a picture of Ed Benguiat's sketch, but if the linked blog is quoting reliably, then I would say this is a fair answer since Ed Benguiat is unquestionably an important expert in typeface design.
I couldn't find any common typographical terminology for the top part so you could call the top bit:
You could call the bottom bit:
A tittle is a small distinguishing mark, such as diacritic or the dot in the letter i and j, so I propose the terms squiggle and tittle.
In The elements of typographic style by Robert Bringhurst, they are referred to as a hook / crook and a dot.
protected by tchrist Jul 6 '14 at 23:57
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