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Version: 4.2.1

License

PLT software and documentation is distributed under the GNU Lesser General Public License (LGPL). This means

See "doc/release-notes/COPYING.LIB" in your PLT installation for more information.

  PLT Scheme
  Copyright (c) 1995-2003 PLT
  Copyright (c) 2004-2009 PLT Scheme Inc.

PLT software includes or extends the following copyrighted material:

  DrScheme
  Copyright (c) 1995-2003 PLT
  Copyright (c) 2004-2009 PLT Scheme Inc.
  All rights reserved.

  MrEd
  Copyright (c) 1995-2003 PLT
  Copyright (c) 2004-2009 PLT Scheme Inc.
  All rights reserved.

  MzScheme
  Copyright (c) 1995-2003 PLT
  Copyright (c) 2004-2009 PLT Scheme Inc.
  All rights reserved.

  libscheme
  Copyright (c) 1994 Brent Benson
  All rights reserved.

  wxWindows
  Copyright (c) 1994
  Artificial Intelligence Applications Institute,
  The University of Edinburgh
  All rights reserved.

  wxWindows Xt
  Copyright (c) 1994
  Artificial Intelligence Applications Institute,
  The University of Edinburgh
  Copyright (c) 1995 GNU (Markus Holzem)
  All rights reserved.

  Conservative garbage collector
  Copyright (c) 1988, 1989 Hans-J. Boehm, Alan J. Demers
  Copyright (c) 1991-1996 Xerox Corporation
  Copyright (c) 1996-1999 Silicon Graphics
  Copyright (c) 1999-2001 by Hewlett-Packard Company
  All rights reserved.

  Collector C++ extension by Jesse Hull and John Ellis
  Copyright (c) 1994 Xerox Corporation
  All rights reserved.

  The A List
  Copyright (c) 1997-2000 Kyle Hammond.
  All rights reserved.

  Independent JPEG Group library
  Copyright (c) 1991-1998 Thomas G. Lane.
  All rights reserved.

  libpng
  Copyright (c) 2000-2002 Glenn Randers-Pehrson
  All rights reserved.

  zlib
  Copyright (c) 1995-2002 Jean-loup Gailly and Mark Adler
  All rights reserved.

  GNU MP Library
  Copyright (c) 1992, 1993, 1994, 1996
  Free Software Foundation, Inc.

  GNU lightning
  Copyright (c) 1994, 1995, 1996, 1999, 2000, 2001, 2002
  Free Software Foundation, Inc.

  libunwind
  Copyright (c) 2003-2005 Hewlett-Packard Development Company, L.P.

  GNU Classpath
  GNU Public License with special exception

  Clanbomber icon and Stop icons
  Everaldo Coelho
  http://www.everaldo.com/

  Save icon
  David Vignoni
  http://icon-king.com/