> > Because I'm not sure where this "requirement" would (or whether it
> > should) be expressed.
> Right there in the spec! You just quoted it!
No, I doesn't work that way. Sorry to get too "formal" here (and in fact
I'm trying to avoid excessive and gratuitous formality) but if you say "srw
requires ..." in a document which is in effect a service definition, it begs
the question where the cited requirement is stated.