- From: Gian Sampson-Wild <gian@tkh.com.au>
- Date: Tue, 26 Jun 2007 11:15:58 +1000
- To: "'Loretta Guarino Reid'" <lorettaguarino@google.com>
- Cc: <public-comments-WCAG20@w3.org>
---------------------------------------------------------- Comment 23: Source: http://www.w3.org/mid/000901c69538$2e394450$f4c9b23a@tkhcomputer (Issue ID: LC-1043) Definition: "For all non-text content one of the following is true.if non-text content is pure decoration, or used only for visual formatting, or if it is not presented to users, it is implemented such that it can be ignored by assistive technology". What is the definition of assistive technology? If one assistive technology behaves one way and another assistive technology another, then how should this SC be followed? Proposed Change: Redefine this SC ---------------------------- Response from Working Group: ---------------------------- Assistive technology is defined in the Glossary at http://www.w3.org/WAI/GL/WCAG20/appendixA.html#atdef . Technology-specific techniques define sufficient mechanisms for marking non-text content so that it will be ignored by AT. If there are differences in behavior among different AT, these should be noted in the User Agent notes for that technique. ---------------------------- Response from GSW: ---------------------------- I still believe that this brings up a serious testability concern. How can this be tested? On which assistive technologies? On which versions? How do you define "ignore" - only if the assistive technology ignores it on default or if it is an option the user could choose? There is inconsistency between screen readers reading alt="" - which is the most basic example of this success criteria - so even this particular technique could be said not to fully fulfill this checkpoint.
Received on Tuesday, 26 June 2007 01:16:11 UTC