Re: wrongly identified geometric shape

From: Philippe Verdy <>
Date: Tue, 18 Dec 2012 08:55:49 +0100

2012/12/18 Michel Suignard <>

> Added to that, the STIX fonts which are a common implementation of math
> symbols tend to size squares and circle even larger than the Unicode
> charts. So any effort to size down these shapes (implied by an alignment
> with the diamond sizes) would go opposite from current practice.

I'd like to note that STIC fonts for maths do NOT have to obey the the same
definition of the EM box (used in linear text with a low baseline). Maths
fonts use a square box similar to the ideographic box with a CENTRAL
baseline for operators and symbols but its EM sizing does not match the
size of an ideographic square box (it is usally smaller than the
ideographic square box, but bigger than the EM box used by

Maths symbols are species livng in different families than punctuation and
symbols that line up with alphanumeric text (like bullets, currency
symbols, hyphens and dashes, and even the slash marking an abbreviation of:
"per", "on", "over" or the separation of alternatives). Maths symbols will
even resize contextually (but will preserve their alignment on the central
baseline, using a precise 2D layout (not part of the 1D linear layout of
alphabetic text, digits).
Received on Tue Dec 18 2012 - 01:57:57 CST

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