It is also common for "/" to occur in Mail Stops.  Mine at DEC is
LKG2-1/BB3.
Donald
From:  Rick Troth <troth(_at_)rice(_dot_)edu>
To:  ietf-822(_at_)dimacs(_dot_)rutgers(_dot_)edu
In-Reply-To:  <199311030737(_dot_)AA06941(_at_)world(_dot_)std(_dot_)com>
Greg, 
      What about changing the multi-line delimiter from '/' 
to ';'.   There does seem to be precedent for using semi-colon 
to delimit  "lines"  and it should be less likely to show-up as 
part of the actual text of,  say,  and earth address than slash. 
-- 
Rick Troth <troth(_at_)rice(_dot_)edu>, Rice University, Information Systems