[Commentor] LC-366 Bruno von Niman (ANEC W3C) on behalf of ANEC [Comment] We believe that Web site access through mobile devices would benefit from the provision of some minimum-level requirements on terminal capabilities and browser features. If this cannot be achieved, other work should be referenced. [Commentor reply] no reply from commenter [Working Group decision] 
The Default Delivery Context (section 1.4 in the Last Call Working Draft) provides the assumed minimum-level requirements alluded to.