License

    Copyright (C) 2006-2016, Walter Spiegel (walter.spiegel@web.de)

    Popen.py is Copyright 2006 Josiah Carlson  (jcarlson@uci.edu),
    see http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/440554
    

    The Gauss-Jordan-Elimination is Copyright 2005 Jarno Elonen,
    see http://elonen.iki.fi/code/misc-notes/python-gaussj/index.html
    

    PmwBase.py, PmwLogicalFont.py and PmwScrolledFrame.py are from the
    Python megawidgets, Copyright 1997-1999 Telstra Corporation Limited,
    see http://pmw.sourceforge.net/
    

    The cumulative binomial probability function is from Wolfgang Urban,
    see http://www.hib-wien.at/leute/wurban/mathematik/distributions.html
    

    MultiStatusBar.py is from IDLE, Copyright (c) 2001-2006
    Python Software Foundation; all Rights Reserved,
    see http://www.python.org/2.2.3/license.html


    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA