http://users.homeaccount.com/~jbolles/XschemaSpecLong.htm
It isn't final yet - there are still some questions being hashed out - but if
you'd like to take a look at the spec as a single piece, it's now available.
(It makes a lot more sense that way, actually!)
I'll be putting up a link soon at http://purl.oclc.org/NET/xschema.
Simon St.Laurent
Dynamic HTML: A Primer / XML: A Primer / Cookies