The HTML spec says:
If a reflecting IDL attribute is a |DOMString| attribute whose content
attribute is an enumerated attribute
<http://www.whatwg.org/specs/web-apps/current-work/multipage/common-microsyntaxes.html#enumerated-attribute>,
and the IDL attribute is limited to only known values, then, on
getting, the IDL attribute must return the conforming value associated
with the state the attribute is in (in its canonical case),
And also says:
The keywords are each defined to map to a particular /state/ (several
keywords might map to the same state, in which case some of the
keywords are synonyms of each other; additionally, some of the
keywords can be said to be non-conforming, and are only in the
specification for historical reasons).
I assume that if there are multiple keywords that map to the same state,
only one of those keywords will be conforming. But I think that needs
to be clarified in the last-quoted text above.
David
