what's an "assertion profile"?

On the call yesterday, Eve wondered aloud if the "SAML2 Holder-of-Key
Subject Confirmation Profile" is really an "Assertion Profile" (a term
previously introduced by Jeff).  A google search turned up this
document:

http://www.oasis-open.org/committees/download.php/21265/draft-hodges-HowToLearnSAML-01.html

Using this terminology, perhaps a more appropriate title is a "SAML2
Holder-of-Key Assertion Profile".  In fact, the profile already
includes a definition of "holder-of-key assertion" so "holder-of-key
assertion profile" seems to make sense.

Comments?

Thanks,
Tom