-requests a password from the user, then prints "LOCKED" on
-the terminal and refuses to relinquish the terminal until
-the password is repeated. If the user forgets the password,
-he has no other recourse but to login elsewhere and kill
-the lock process.
+requests a password from the user, reads it again for verification and
+then it will normally not relinquish the terminal until the password is
+repeated. There are three other conditions under it will terminate:
+it accepts the password for root as an alternative to the one given
+by the user, it will timeout after some interval of time,
+and it may be killed by somebody with the appropiate permission.
+The default time limit is 15 minutes but it may be changed with the
+.B \-number
+option where
+.I number
+is the time limit in minutes.