Specification: http://www.w3.org/TR/html5/Overview.html
Multipage: http://www.whatwg.org/C#top
Complete: http://www.whatwg.org/c#top

Comment:
Consistent use of 'no value' attributes.

The 'no value' attributes like "selected", "checked" and "required" are being
used inconsistently in the examples throughout the HTML5 specifications.

Where "required" is always used with no value ('required' vs
'required="required"'), the "selected" as well as the "checked" attribute use
both the style with and without value ('selected="selected"' and 'selected').
There is also no mention about the possibility to use either of these styles,
let alone one style being recommended over the other.
Only one style should be used throughout the document, and one of the two
should preferably be recommended.

Personally I would even opt for a new attribute that takes one of the three
attributes above as values. This would get rid of these rather awkward
attributes all together. E.g.

'state="selected"', 'state="required"'

I, however, do not know how viable such a proposal will be if made by me if it
hasn't been by others already.

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