Specification: http://dev.w3.org/html5/spec/single-page.html
Multipage: http://www.whatwg.org/C#top
Complete: http://www.whatwg.org/c#top

Comment:
I would like more clarification on the concept of the term "groups" in regards
to the section on definition lists found at:

http://www.w3.org/TR/html5/grouping-content.html#the-dl-element

Quite a bit of time is spent defining these groups, for example:

"If a dl element is empty, it contains no groups."

"If a dl element contains only dd elements, then it consists of one group with
values but no names."

How and/or when do these "groups" come into play?  Are there any current plans
to expose these groups in the DOM, so that dd elements can be accessed from
their sibling dt element?

What would be even more useful would be exposing these groups as
pseudo-elements for CSS rules, allowing each group of dd's in the dt-dd pair
to be styled as a unified block. There are clever solutions for this
currently, but all of them require either floats, positioning, hard-defined
widths, etc.  There is currently no compliant way to style a dd element (and
its dt/dd children) as a table, which  might be possible with pseudo-elements. 

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