On 02/07/2012 13:39, Dan Freeman wrote:
The <sup> tag is definitely not presentational. It’s good for the
browser to know what is superscripted. Think about math and powers.
The browser will interpret these two things totally differently:
10^4
10<sup>4</sup> (correct)
10<span>4</span> (browser will think it’s 104 instead of 10^4 )
Arguably the semantics of mathematics are best conveyed with something
like MathML, not HTML. <sup> really just means "it's superscript - make
it look tinier, and up a bit". Compare the semantics of
10<sup>4</sup> vs 1<sup>st</sup> vs M<sup>lle</sup>
clearly, not related at all, apart from the fact that they visually look
the same in print. The meaning (it's a mathematical exponent vs an
ordinal indicator vs an abbreviation for Mademoiselle) changes depending
on context, so the semantics are certainly far from cut and dry.
IMHO of course,
P
--
Patrick H. Lauke
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