16 Jun
2009
16 Jun
'09
4:18 p.m.
The actual usage in the manual is as a flipped version of 0x2023 (triangular bullet) but that doesn't exist at all. Which Unicode character is best for the math relation, I have no idea (but see below).
Oh. Then I got it completely wrong in my earlier mail; since U+2023 has a reference to U+25B8, the smaller one, this would rather plead for using U+25C2, its sibling, as \blacktriangleleft.
There are no black triangles in Cambria Math *at all*, it seems.
Indeed, the U+25XX row is entitled “Geometric Shapes” and is not related to math. Arthur