Copyright (C) 2004-2014 CSIRO 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., 675 Massachusetts Ave, Cambridge, MA 02139, USA. Correspondence concerning this software should be addressed as follows: Internet email: asap@atnf.csiro.au Postal address: Australia Telescope National Facility, P.O. Box 76, Epping, NSW, 2121, AUSTRALIA