[mail-vet-discuss] Reworked section 2 (for -13)

[Murray S. Kucherawy]

Murray S. Kucherawy wrote:
> Attached is a reworked section 2 based on Michael's recent suggestions 
> and discussions with Tony and a couple of others.
One thing I forgot to mention is that I also intend to provide an "x-" 
result code structure for experimental result codes, basically copied 
from the same system used to make the supported method set extensible.  
I'll post that as well once I have text done up for it.