This package is maintained for Debian by:
Bruce Walker <w1bw@debian.org>
Bdale Garbee <bdale@gag.com>
Matthias Urlichs <smurf@debian.org>
Peter Eisentraut <petere@debian.org>
Kurt Roeckx <kurt@roeckx.be>


The upstream source is available from http://www.ntp.org

General copyright and license:

   The following copyright notice applies to all files collectively
   called the Network Time Protocol Version 4 Distribution. Unless
   specifically declared otherwise in an individual file, this notice
   applies as if the text was explicitly included in the file.
***********************************************************************
*                                                                     *
* Copyright (c) David L. Mills 1992-2009                              *
*                                                                     *
* Permission to use, copy, modify, and distribute this software and   *
* its documentation for any purpose with or without fee is hereby     *
* granted, provided that the above copyright notice appears in all    *
* copies and that both the copyright notice and this permission       *
* notice appear in supporting documentation, and that the name        *
* University of Delaware not be used in advertising or publicity      *
* pertaining to distribution of the software without specific,        *
* written prior permission. The University of Delaware makes no       *
* representations about the suitability this software for any         *
* purpose. It is provided "as is" without express or implied          *
* warranty.                                                           *
*                                                                     *
***********************************************************************

   The following individuals contributed in part to the Network Time
   Protocol Distribution Version 4 and are acknowledged as authors of
   this work.
    1. Mark Andrews <mark_andrews@isc.org> Leitch atomic clock controller
    2. Bernd Altmeier <altmeier@atlsoft.de> hopf Elektronik serial line
       and PCI-bus devices
    3. Viraj Bais <vbais@mailman1.intel.com> and Clayton Kirkwood
       <kirkwood@striderfm.intel.com> port to WindowsNT 3.5
    4. Michael Barone <michael,barone@lmco.com> GPSVME fixes
    5. Jean-Francois Boudreault
       <Jean-Francois.Boudreault@viagenie.qc.ca>IPv6 support
    6. Karl Berry <karl@owl.HQ.ileaf.com> syslog to file option
    7. Greg Brackley <greg.brackley@bigfoot.com> Major rework of WINNT
       port. Clean up recvbuf and iosignal code into separate modules.
    8. Marc Brett <Marc.Brett@westgeo.com> Magnavox GPS clock driver
    9. Piete Brooks <Piete.Brooks@cl.cam.ac.uk> MSF clock driver, Trimble
       PARSE support
   10. Reg Clemens <reg@dwf.com> Oncore driver (Current maintainer)
   11. Steve Clift <clift@ml.csiro.au> OMEGA clock driver
   12. Casey Crellin <casey@csc.co.za> vxWorks (Tornado) port and help
       with target configuration
   13. Sven Dietrich <sven_dietrich@trimble.com> Palisade reference clock
       driver, NT adj. residuals, integrated Greg's Winnt port.
   14. John A. Dundas III <dundas@salt.jpl.nasa.gov> Apple A/UX port
   15. Torsten Duwe <duwe@immd4.informatik.uni-erlangen.de> Linux port
   16. Dennis Ferguson <dennis@mrbill.canet.ca> foundation code for NTP
       Version 2 as specified in RFC-1119
   17. John Hay <jhay@@icomtek.csir.co.za> IPv6 support and testing
   18. Glenn Hollinger <glenn@herald.usask.ca> GOES clock driver
   19. Mike Iglesias <iglesias@uci.edu> DEC Alpha port
   20. Jim Jagielski <jim@jagubox.gsfc.nasa.gov> A/UX port
   21. Jeff Johnson <jbj@chatham.usdesign.com> massive prototyping
       overhaul
   22. Hans Lambermont <Hans.Lambermont@nl.origin-it.com> or
       <H.Lambermont@chello.nl> ntpsweep
   23. Poul-Henning Kamp <phk@FreeBSD.ORG> Oncore driver (Original
       author)
   24. Frank Kardel <kardel (at) ntp (dot) org> PARSE <GENERIC>
       driver (>14 reference clocks), STREAMS modules for PARSE, support
       scripts, syslog cleanup, dynamic interface handling
   25. William L. Jones <jones@hermes.chpc.utexas.edu> RS/6000 AIX
       modifications, HPUX modifications
   26. Dave Katz <dkatz@cisco.com> RS/6000 AIX port
   27. Craig Leres <leres@ee.lbl.gov> 4.4BSD port, ppsclock, Magnavox GPS
       clock driver
   28. George Lindholm <lindholm@ucs.ubc.ca> SunOS 5.1 port
   29. Louis A. Mamakos <louie@ni.umd.edu> MD5-based authentication
   30. Lars H. Mathiesen <thorinn@diku.dk> adaptation of foundation code
       for Version 3 as specified in RFC-1305
   31. Danny Mayer <mayer@ntp.org>Network I/O, Windows Port, Code
       Maintenance
   32. David L. Mills <mills@udel.edu> Version 4 foundation: clock
       discipline, authentication, precision kernel; clock drivers:
       Spectracom, Austron, Arbiter, Heath, ATOM, ACTS, KSI/Odetics;
       audio clock drivers: CHU, WWV/H, IRIG
   33. Wolfgang Moeller <moeller@gwdgv1.dnet.gwdg.de> VMS port
   34. Jeffrey Mogul <mogul@pa.dec.com> ntptrace utility
   35. Tom Moore <tmoore@fievel.daytonoh.ncr.com> i386 svr4 port
   36. Kamal A Mostafa <kamal@whence.com> SCO OpenServer port
   37. Derek Mulcahy <derek@toybox.demon.co.uk> and Damon Hart-Davis
       <d@hd.org> ARCRON MSF clock driver
   38. Rainer Pruy <Rainer.Pruy@informatik.uni-erlangen.de>
       monitoring/trap scripts, statistics file handling
   39. Dirce Richards <dirce@zk3.dec.com> Digital UNIX V4.0 port
   40. Wilfredo Sánchez <wsanchez@apple.com> added support for NetInfo
   41. Nick Sayer <mrapple@quack.kfu.com> SunOS streams modules
   42. Jack Sasportas <jack@innovativeinternet.com> Saved a Lot of space
       on the stuff in the html/pic/ subdirectory
   43. Ray Schnitzler <schnitz@unipress.com> Unixware1 port
   44. Michael Shields <shields@tembel.org> USNO clock driver
   45. Jeff Steinman <jss@pebbles.jpl.nasa.gov> Datum PTS clock driver
   46. Harlan Stenn <harlan@pfcs.com> GNU automake/autoconfigure
       makeover, various other bits (see the ChangeLog)
   47. Kenneth Stone <ken@sdd.hp.com> HP-UX port
   48. Ajit Thyagarajan <ajit@ee.udel.edu>IP multicast/anycast support
   49. Tomoaki TSURUOKA <tsuruoka@nc.fukuoka-u.ac.jp>TRAK clock driver
   50. Paul A Vixie <vixie@vix.com> TrueTime GPS driver, generic TrueTime
       clock driver
   51. Ulrich Windl <Ulrich.Windl@rz.uni-regensburg.de> corrected and
       validated HTML documents according to the HTML DTD


Copyright and licenses for other files:


A lot of the other files are:
 * Copyright (c) 1995-2006 by Frank Kardel <kardel <AT> ntp.org>
 * Copyright (c) 1989-1994 by Frank Kardel, Friedrich-Alexander Universität Erlangen-Nürnberg, Germany
 * Copyright (c) 1997 by Meinberg Funkuhren (www.meinberg.de)

With the following license:
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the author nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.


Some files are:
 * Copyright (C) 1996-2003  Internet Software Consortium.

With the following copyright notice:
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
 * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
 * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.


Some files are:
 * Copyright (C) 2004-2006  Internet Systems Consortium, Inc. ("ISC")

With the license:
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.


Some files are:
 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.

With as license:
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the project nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.


Some files are:
 * Copyright (c) 1982-2003
 *      The Regents of the University of California.  All rights reserved.

With as license:
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.


Some files are:
/* Copyright (c) 1995 Vixie Enterprises

With as license:
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies, and that
 * the name of Vixie Enterprises not be used in advertising or publicity
 * pertaining to distribution of the document or software without specific,
 * written prior permission.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND VIXIE ENTERPRISES DISCLAIMS ALL
 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL VIXIE ENTERPRISES
 * BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
 * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.


adjtime.c:
/* (c) Copyright Tai Jin, 1988.  All Rights Reserved.                    */
/*     Hewlett-Packard Laboratories.                                     */
/*                                                                       */
/* Permission is hereby granted for unlimited modification, use, and     */
/* distribution.  This software is made available with no warranty of    */
/* any kind, express or implied.  This copyright notice must remain      */
/* intact in all versions of this software.                              */
/*                                                                       */
/* The author would appreciate it if any bug fixes and enhancements were */
/* to be sent back to him for incorporation into future versions of this */
/* software.  Please send changes to tai@iag.hp.com or ken@sdd.hp.com.   */


ntp_filegen.c/h:
 * Copyright (C) 1992, 1996 by Rainer Pruy
 * Friedrich-Alexander Universität Erlangen-Nürnberg, Germany
 *
 * This code may be modified and used freely
 * provided the credits remain intact.


inet_aton.c:
 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies, and that
 * the name of Digital Equipment Corporation not be used in advertising or
 * publicity pertaining to distribution of the document or software without
 * specific, written prior permission.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.


strstr.c:
 * Copyright (c) 1991-1998 University of Maryland at College Park
 * All Rights Reserved.
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of U.M. not be used in advertising or
 * publicity pertaining to distribution of the software without specific,
 * written prior permission.  U.M. makes no representations about the
 * suitability of this software for any purpose.  It is provided "as is"
 * without express or implied warranty.
 *
 * U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M.
 * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OU


refclock_jjy:
/*  Copyright (C) 2001-2004, Takao Abe.  All rights reserved.         */
/*                                                                    */
/*  Permission to use, copy, modify, and distribute this software     */
/*  and its documentation for any purpose is hereby granted           */
/*  without fee, provided that the following conditions are met:      */
/*                                                                    */
/*  One retains the entire copyright notice properly, and both the    */
/*  copyright notice and this license. in the documentation and/or    */
/*  other materials provided with the distribution.                   */
/*                                                                    */
/*  This software and the name of the author must not be used to      */
/*  endorse or promote products derived from this software without    */
/*  prior written permission.                                         */
/*                                                                    */
/*  THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT EXPRESSED OR IMPLIED    */
/*  WARRANTIES OF ANY KIND, INCLUDING, BUT NOT LIMITED TO, THE        */
/*  IMPLIED WARRANTIES OF MERCHANTABLILITY AND FITNESS FOR A          */
/*  PARTICULAR PURPOSE.                                               */
/*  IN NO EVENT SHALL THE AUTHOR TAKAO ABE BE LIABLE FOR ANY DIRECT,  */
/*  INDIRECT, GENERAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES   */
/*  ( INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE        */
/*  GOODS OR SERVICES; LOSS OF USE, DATA OR PROFITS; OR BUSINESS      */
/*  INTERRUPTION ) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,     */
/*  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ( INCLUDING        */
/*  NEGLIGENCE OR OTHERWISE ) ARISING IN ANY WAY OUT OF THE USE OF    */
/*  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */


refclock_palisade.c:
 * Copyright (c) 1997, 1998, 1999, 2000  Trimble Navigation Ltd.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    This product includes software developed by Trimble Navigation, Ltd.
 * 4. The name of Trimble Navigation Ltd. may not be used to endorse or
 *    promote products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY TRIMBLE NAVIGATION LTD. ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL TRIMBLE NAVIGATION LTD. BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.


ntpsweep:
# Copyright (C) 1999,2000 Hans Lambermont and Origin B.V.
#
# Permission to use, copy, modify and distribute this software and its
# documentation for any purpose and without fee is hereby granted,
# provided that the above copyright notice appears in all copies and
# that both the copyright notice and this permission notice appear in
# supporting documentation. This software is supported as is and without
# any express or implied warranties, including, without limitation, the
# implied warranties of merchantability and fitness for a particular
# purpose. The name Origin B.V. must not be used to endorse or promote
# products derived from this software without prior written permission.
