Issue with role=dialog within the ARIA spec text for 1.1

This too came up recently, when viewing the ARIA spec text for role=dialog at
http://www.w3.org/TR/wai-aria-1.1/#dialog
The spec text mentions aria-label for setting the name of a dialog, yet makes no mention of the use of aria-describedby to specify the static introduction text contained within that dialog, as is similarly documented for alertdialog at
http://www.w3.org/TR/wai-aria-1.1/#alertdialog
Even though this is already supported for both within ATs like JAWS and NVDA.

This is of particular value when setting focus to a form field within a role=dialog container that includes introductory text prior to that field in the reading order, such as the following.

<div role="dialog" aria-label="Register as a new user" aria-describedby="additionalInfoId">
<div id="additionalInfoId">
By registering you are agreeing to give us your soul forever and ever, so there.
</div>
<form>
... Form fields here with the first form field receiving focus after the dialog opens ...
</form>
</div>

Can similar text as within role=alertdialog be added to role=dialog to indicate this usage?

Received on Thursday, 23 April 2015 19:14:14 UTC