[whatwg] Web Forms 2.0 Feedback
jg307 at cam.ac.uk
Fri Jan 7 04:51:43 PST 2005
Matthew Thomas wrote:
> On 7 Jan, 2005, at 5:58 AM, Ian Hickson wrote:
>> For <sub>, the ideal aural rendering depends on the context, but humans
>> are adept at interpreting things based on context and you could
>> probably get away with rendering sub by simply prefixing its contents
>> with the syllable "sub", as in "H sub-two O" for "H<sub>2</sub>O".
>> the fact that you can use the element to sensibly change the aural
>> rendering suggests to be that it is semantic enough to be kept in HTML.
> Except that "sub" is merely (an abbreviation of) a description of the
> typographical presentation!
Because that happens to be a convenient umbrella for specific
constructions in documents that need to be treated in a particular way
by UAs. Indeed I would be more than happy if Web Apps "clarified" the
situation with <sup> and <sub> so that purely presentational uses like
L<sup>A</sup>T<sub>E</sub>X were forbidden as these uses undermine the
ability to UAs to provide an appropriate rendering in the case where the
presence of "superscripts" or "subscripts" in a sequence of charcters is
important information that needs to be passed on to the user.
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