On Tue, 19 Mar 91 11:19:53 EST <[log in to unmask]> said:
>What are the various choices?  In particular, I'd like to leave a block of
>lines as they are.  Is there an .FO NO?  Should I simply indent each one
>a space?  Is there a list or discussion on how these files are formatted?
 
There is a ".fo off" that is cancelled by ".fo" -- the best source of
documentation seems to be $DEFAULT MAILFORM and LSVIMAIL EXEC on LISTSERV 191.