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Re: support for sub and sup in screen readers and talking browsers

From: Christophe Strobbe <christophe.strobbe@esat.kuleuven.be>
Date: Mon, 17 Sep 2007 11:39:06 +0200
Message-Id: <>
To: w3c-wai-ig@w3.org


At 15:33 15/09/2007, Steven Faulkner wrote:
>Using window eyes 5.5 with IE7
>the results are similar to jaws and voiceover:
>"it just reads the
>superscripts and subscripts as seperated blocks with no particular
>disctinction or announcement of how they differ."
>I had a look at the various settings in JAWS/Window Eyes to see if I 
>could get them to announce the sub/superscript differently, to no avail.

I have updated the test page at 
<http://tinyurl.com/2qll7h>http://tinyurl.com/2qll7h with test 
results from Joshue O'Connor, Sailesh Panchang, Charles 
McCathieNevile and Steve Faulkner. I will probably get some feedback 
from Linux users later this week. Hopefully, I will also get results 
from people using HAL, IBM Home Page Reader and other AT.

Best regards,


>On 13/09/2007, Christophe Strobbe 
>I recently read in a report on accessibility of mathematics and
>science that screen readers can't tell the difference between sub and
>sup in HTML, so a<sup>n</sup> and a<sub>n</sub> are both rendered the
>same on a Braille display, namely as "an".
>I would like to collect some more data on the support of sub and sup
>by screen readers and talking browsers and I have put together a
>small test page for this purpose: < 
><http://tinyurl.com/2qll7h>http://tinyurl.com/2qll7h>. The
>page contains five examples of superscript and subscript and a few
>combinations of these.
>With Fire Vox, the code samples given above are read as an emphatic
>"an". The output for the other expressions is also misleading. I
>would appreciate it if users of screen readers and talking browsers
>could tell me what their systems output for each of the five
>examples. I will then add the test results to the test page.
>Best regards,
>with regards
>Steve Faulkner
>Technical Director - TPG Europe
>Director - Web Accessibility Tools Consortium
><http://www.paciellogroup.com>www.paciellogroup.com | www.wat-c.org
>Web Accessibility Toolbar - 

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 Monday, 17 September 2007 09:39:32 UTC

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