[Auth]version info

[Ron Burk]

I think there needs to be version information in the
request, so that the schema can be revised in the
future, but clients can still satisfy requests made using
out-of-date schemas.

Perhaps the usual XML-ish reference to a version-specific
DTD is the way to satisfy this?
Ron Burk
HighTechInfo.com, www.hightechinfo.com