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In a recent email, Firefox developer Alexander Surkov writes: > <a role=link href><img alt="Lorem ipsum."></a> > role of html:a is link, action is "jump" > role of img accessible is image, action is "jump" (inherited from > html:a accessible) > > <a role=img href> > role is html:a accessbile is image, action is "jump" since it's a > still link after all. http://lists.w3.org/Archives/Public/wai-xtech/2012Apr/0020.html It is non-obvious that actions from native semantics should continue to be exposed to accessibility APIs when those semantics are overridden. Whether this is right or wrong, sounds like something the implementation guide should explicitly discuss.