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Re: Technique H49: screen reader support for sub and sup

From: Christophe Strobbe <christophe.strobbe@esat.kuleuven.be>
Date: Fri, 14 Sep 2007 17:53:21 +0200
Message-Id: <>
To: wcag <w3c-wai-gl@w3.org>


At 12:36 13/09/2007, Christophe Strobbe wrote:
>Technique H49 (Using semantic markup to mark emphasized or special 
>text), which is currently not associated with a success criterion, 
>contains an example with sub and sup elements. Sub and sup are also 
>in the test procedures.
>However, I just read in a report on accessibility of mathematics and 
>science that screen readers can't tell the difference between sub 
>and sup, so a<sup>n</sup> and a<sub>n</sub> are both rendered the 
>same on a Braille display, namely as "an".
>I think we should do some tests for screen reader support (both 
>Braille and speech), and possibly adapt the user agent and assistive 
>technology support notes.

There is now a test page at <http://tinyurl.com/2qll7h>.

Best regards,


Christophe Strobbe
K.U.Leuven - Dept. of Electrical Engineering - SCD
Research Group on Document Architectures
Kasteelpark Arenberg 10 bus 2442
B-3001 Leuven-Heverlee
tel: +32 16 32 85 51

Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm
Received on Friday, 14 September 2007 15:53:31 UTC

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