11/3/71	MESG (I)
NAME	mesg -- permit or deny messages
SYNOPSIS	mesg [n][y]
DESCRIPTION	mesg n forbids messages via write by revoking non--userwrite permission on the user's typewriter. mesg y
	reinstates permission. mesg with no argument reverses thecurrent permission. In all cases the previous state is reported.
FILES	/dev/ttyn
SEE_ALSO	write
DIAGNOSTICS	"?" if the standard input file is not a typewriter
BUGS
OWNER	dmr, ken