Nwall is a readline interface to the old Unix wall(1) program.  It is used
primarily on zork.net as a form of chat system, since it sends one line at a
time.

Running nwall -n opts the user out of nwall messages, while still leaving the
tty open for traditional wall/write/talk notices.  To return to nwall-visible
mode, run nwall -y.

Currently nwall does not clear out old lock files when the user logs out, but
it does try to see if the user matches teh owner of a lock on a given tty.
This means that if you set nwall -n, log out, log back in again on the same
tty, you'll still be -n.  But if someone else logs in on that tty, they'll
still receive nwall messages.

The wishlist currently includes:
	Support for the IRC /me command.
	Automatic redraw of the prompt when a message comes in (good luck!)
	Proper autoconfing of the log and lock file locations (currently
		statically bound to /var/log and /var/lock)
	Automatic expiration of locks.
	Use of Syslog to generate log files.
	Built-in LISP interpreter and mail reader.