It's funny that that is the easiest thing the author can do to summarize the rules. I'd think a grammar (http://www.ietf.org/rfc/rfc2822.txt http://www.ietf.or

It's funny that that is the easiest thing the author can do to summarize the rules. I'd think a grammar (http://www.ietf.org/rfc/rfc2822.txt http://www.ietf.org/rfc/rfc2822.txt) would work just great.