[qaframe-spec] What is testable?

Hi,

  The current Specification Guidelines document
<http://www.w3.org/QA/WG/2003/08/qaframe-spec> does not define what it
consideres "testable" or "measurable" while it spells out requirements
that rely on these terms. Please explicitly define what is considered
testable, especially in scope of conformance testing software. For
example, if a specification reads, "The <address> element MUST contain
contact information" I would not consider the statement testable.

Thanks.