Is anyone aware of a good way to make mail show full headers?  I'd very
much like a command to display the *ENTIRE* message; especially, of
course, the Received: lines.

Long ago, about two jobs back, I had been discussing things like adding
'|' as a command to mail(1).  I'm considering actually trying to do
this some time soon; if there are any features you'd really like to
see, suggest 'em, because I'm feeling like contributing something to
the system, and mail(1) is probably one of the programs I use most.

-s