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"A corollary to this is that the alt attribute's value should never contain text that could be considered the image's caption, title, or legend. It is supposed to contain replacement text that could be used by users instead of the image; it is not meant to supplement the image. The title attribute can be used for supplemental information." contains, inaccurate referenced elements, promotes misuse of title attribute, inappropriate constraints on use of alt - needs cleanup.
I agree with Steve on this
EDITOR'S RESPONSE: This is an Editor's Response to your comment. If you are satisfied with this response, please change the state of this bug to CLOSED. If you have additional information and would like the Editor to reconsider, please reopen this bug. If you would like to escalate the issue to the full HTML Working Group, please add the TrackerRequest keyword to this bug, and suggest title and text for the Tracker Issue; or you may create a Tracker Issue yourself, if you are able to do so. For more details, see this document: http://dev.w3.org/html5/decision-policy/decision-policy.html Status: Accepted Change Description: refer to commit https://github.com/w3c/html/commit/34f089ee781f70be434e88141c1008f8de2a5fc2 Rationale: agreed with Description.
Fixed in CR http://www.w3.org/TR/html5/embedded-content-0.html#general-guidelines