.he 'MESG (I)'3/15/72'MESG (I)'
NAME mesg -- permit or deny messages
SYNOPSIS mesg
\b\b\b\b____ [ n
\b_ ][ y
\b_ ]
DESCRIPTION mesg
\b\b\b\b____ n
\b_
forbids messages via write
\b\b\b\b\b_____ by revoking non-user
write permission on the user's typewriter.
mesg
\b\b\b\b____ y
\b_ reinstates permission.
mesg
\b\b\b\b____ with no argument reverses the current permission.
In all cases the previous state is reported.
DIAGNOSTICS "?" if the standard input file is not a typewriter