license.txt

    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 software; see the file COPYING.  If not, write to
    the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
    Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).

    As a special exception, you have permission for
    additional uses of the text contained in its release of HWGUI.
  
    The exception is that, if you link the HWGUI library with other
    files to produce an executable, this does not by itself cause the
    resulting executable to be covered by the GNU General Public License.
    Your use of that executable is in no way restricted on account of
    linking the HWGUI library code into it.