implementation of HTML5 semantics in internet Explorer

Hi Cynthia and IE team

It is great to see the announcement of accessibility API implementations
for HTML5 structural elements in IE.

https://status.modern.ie/htmlsectionsinaccessibilityapi?iestatuses=indevelopment&browserstatuses=notsupported,indevelopment,implemented&browsers=chrome,firefox,opera,safari&ieversion=11

Can you provide info on how these are being implemented so we can document
in HTML Accessibility API Mappings 1.0
http://rawgit.com/w3c/aria/master/html-aam/html-aam.html

I also note that status.modern.ie references a 2013 version of the API spec:
http://www.w3.org/TR/html-aapi/

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Regards

SteveF
HTML 5.1 <http://www.w3.org/html/wg/drafts/html/master/>