The Snark

Percontation PointAccording to Bibliophile Bullpen, this is “called a percontation point — a ‘rhetorical question mark’. . . an irony mark also called a snark or zing. Created by Henry Denham in the 1580s, it pops up in literature every century or so, but never really caught on.”
The history of the percontation point is here on wikipedia. Take a look, if just to see the side bar that lists a plethora of little used punctuation marks and their names. Can you guess these: guillemets, asterism, and solidus?
Thanks to Cathy for the tip!