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Re: Revised response to your comments on WAI-ARIA 1.0 Authoring Practices

From: Loretta Guarino Reid <lorettaguarino@google.com>
Date: Thu, 17 Jun 2010 11:39:56 -0700
Message-ID: <AANLkTikwlwWj9jSKlhEoi0JzsNVGzHEaQQM0ogdbG61K@mail.gmail.com>
To: PFWG Public Comments <public-pfwg-comments@w3.org>
I accept this response.

> Comment 211: Example for external long description
> Date: 2009-04-16
> Archived at: http://lists.w3.org/Archives/Public/public-pfwg-comments/2009AprJun/0064.html
> Relates to: WAI-ARIA 1.0 Authoring Practices <http://www.w3.org/TR/2009/WD-wai-aria-practices-20090224/>
> Status: Alternate action taken
> -------------
> Your comment:
> -------------
> We suggest including an example to cover the use case where an author may
> not want to include the long description on the same page. (ex. a complex
> chart where a describedby attribute points to an id on the page which
> contains a link to a second resource containing the complete description).
> --------------------------------
> Response from the Working Group:
> --------------------------------
> WAI-ARIA does not provide for long description references outside the page.
> We have not found longdesc to be supported by industry due to the extensive
> work needed to create the alternative content. Also, it forces people to go
> to another page and lose context. Consequently, WAI-ARIA only supports an
> ID reference for local descriptive text. This does not preclude authors
> from using external long descriptions instead when supported by the host
> language; it is simply a semantic that ARIA does not add to host languages.
> Authors can also provide a link to a description via an in-page anchor.
> == new response ==
> Although assistive technologies do no yet support this feature,
> aria-describedby may reference more detailed information about the object
> it is describing that includes other content such as tables or a link to
> another document that provides a detailed description of the object. We
> have added an example of this to the Authoring Practices:
> http://www.w3.org/WAI/PF/aria-practices/20100616/#Descriptions.
Received on Thursday, 17 June 2010 18:40:25 UTC

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