BL>   This means that you and I can send messages in two parts: the top
BL> part for general consumption and...

BL> {at}EOT:

BL>   this part that Paul won't read unless he disables his EOT function.
BL> Now I'll go into the packet and edit out the other EOT.

Actually, after getting an EOT I only delete lines starting "---"
and "origin" etc.

Bob, your EOT is out-of-spec.  You did that deliberately and
maliciously.  Don't do that through this system again.  If you
wish to generate out-of-spec messages, go and dial someone else 
instead, like David Drummond.  BFN.  Paul.
@EOT:

---