The PLplot package may be distributed under the following terms: This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc. 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA The text of this license is given in the file COPYING.LIB in the distribution directory. Exceptions are noted below. The intent behind distributing PLplot under the LGPL is to ensure that it continues to evolve in a positive way, while remaining freely distributable. The package is considered a "library" even though there are associated programs, such as plrender, pltek, plserver, and pltcl. The ties between these programs and the library are so great that I consider them as part of the library, so distribution under the terms of the LGPL makes sense. Software developers are allowed and encouraged to use PLplot as an integral part of their product, even a commercial product. Under the conditions of the LGPL, however, the PLplot source code must remain freely available, including any modifications you make to it (if you distribute a program based on the modified library). Please read the full license for more info. Additional Copyrights --------------------- The octave front end which links to the PLplot library (but not vice versa), and which is otherwise independent of PLplot is copyright under the GPL license (see COPYING). The startup code used in argument handling (utils/plrender.c and src/plargs.c) is partially derived from "xterm.c" of the X11R5 distribution, and its copyright is reproduced here: ****************************************************************************** Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts, and the Massachusetts Institute of Technology, Cambridge, Massachusetts. All Rights Reserved 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 appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the names of Digital or MIT not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DIGITAL 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 OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ****************************************************************************** The documentation files are distributed under the following license terms: DocBook documentation for the PLplot Library Copyright (C) 1994 Geoffrey Furnish and Maurice LeBrun Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004 Alan W. Irwin Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004 Rafael Laboissiere Copyright (C) 2003 Joao Cardoso License terms: =========================================================================== Redistribution and use in source (XML DocBook) and "compiled" forms (HTML, PDF, PostScript, DVI, TeXinfo and so forth) with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code (XML DocBook) must retain the above copyright notice, this list of conditions and the following disclaimer as the first lines of this file unmodified. 2. Redistributions in compiled form (transformed to other DTDs, converted to HTML, PDF, PostScript, and other formats) 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. Important: THIS DOCUMENTATION IS PROVIDED BY THE PLPLOT PROJECT "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 PLPLOT PROJECT 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 DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. =========================================================================== Any file that is explicitly marked as "public domain" is free from any restriction on distribution. Any file that has a explicit copyright notice may be distributed under the terms of both the LGPL and whatever stated conditions accompany the copyright.