Copyright (C) 1994-1995 Burkhardt Seifert, M. Brockmann, J. Engel, T. Gasser
Copyright (C) 2000-2001 Martin Maechler

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; see licence() in R, or the file COPYING.

If you have not received a copy of this file, you can obtain one
via WWW at http://www.gnu.org/copyleft/gpl.html, or by writing to:

   The Free Software Foundation, Inc.,
   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

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.