===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/su/su.1,v
retrieving revision 1.15
retrieving revision 1.16
diff -u -r1.15 -r1.16
--- src/usr.bin/su/su.1	2002/03/27 20:29:38	1.15
+++ src/usr.bin/su/su.1	2002/10/16 01:06:32	1.16
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: su.1,v 1.15 2002/03/27 20:29:38 millert Exp $
+.\"	$OpenBSD: su.1,v 1.16 2002/10/16 01:06:32 millert Exp $
 .\"
 .\" Copyright (c) 1988, 1990 The Regents of the University of California.
 .\" All rights reserved.
@@ -41,7 +41,7 @@
 .Nd substitute user identity
 .Sh SYNOPSIS
 .Nm su
-.Op Fl fKlm
+.Op Fl fKLlm
 .Op Fl a Ar auth-type
 .Op Fl c Ar login-class
 .Op Ar login Op Ar "shell arguments"
@@ -122,6 +122,16 @@
 this option prevents it from reading the
 .Dq Pa .cshrc
 file.
+.It Fl L
+Loop until a correct username and password combination is entered,
+similar to
+.Xr login 1 .
+Note that in this mode target
+.Ar login
+must be specified explicitly, either on the command line or interactively.
+Additionally,
+.Nm
+will prompt for the password even when invoked by root.
 .It Fl K
 Do not attempt to use Kerberos to authenticate the user.
 .It Fl l