===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/su/su.1,v
retrieving revision 1.15
retrieving revision 1.16
diff -c -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 ****
! .\"	$OpenBSD: su.1,v 1.15 2002/03/27 20:29:38 millert Exp $
  .\"
  .\" Copyright (c) 1988, 1990 The Regents of the University of California.
  .\" All rights reserved.
--- 1,4 ----
! .\"	$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.
***************
*** 41,47 ****
  .Nd substitute user identity
  .Sh SYNOPSIS
  .Nm su
! .Op Fl fKlm
  .Op Fl a Ar auth-type
  .Op Fl c Ar login-class
  .Op Ar login Op Ar "shell arguments"
--- 41,47 ----
  .Nd substitute user identity
  .Sh SYNOPSIS
  .Nm su
! .Op Fl fKLlm
  .Op Fl a Ar auth-type
  .Op Fl c Ar login-class
  .Op Ar login Op Ar "shell arguments"
***************
*** 122,127 ****
--- 122,137 ----
  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