No really, it’s a Unicode character, U+2767 if you must know.
I found it
(warning; won’t display properly in most browsers)
I made a really big picture; read on for a look.
On my Mac, the dingbats are noticeably absent in most fonts; only all
there in, as one might guess, Zapf Dingbats.
By Tim Bray.
The opinions expressed here
are my own, and no other party
necessarily agrees with them.
A full disclosure of my
professional interests is
on the author page.