ISSUE-140 Change proposal from Noah Mendelsohn  This document
contains a change proposal from Noah Mendelsohn for HTML working
group ISSUE-140, which relates to conformance terminology. The
changes are based on the Common infrastructure section of the
HTML5 Editors' draft dated 14 January, 2011. Suggested
additional text is marked like this, and proposed deletions like
this. Commentary on the proposed changes is marked like this.
For brevity, sections in which no changes are proposed have been
removed.  This proposal is offered from Noah Mendelsohn as an
individual contributor to the W3C. It has not been discussed by
and would not necessarily meet with approval from other TAG
members.  2 Common infrastructure  2.2 Conformance requirements
This specification describes the conformance criteria for user
agents (relevant to implementors) and documents (relevant to
authors and authoring tool implementors).  Conforming HTML5
documents are those that comply with all the conformance
criteria for documents. For re