Software in the Hmisc and Design libraries is Copyright (C) 1991-2004 by Frank E Harrell Jr

This 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, or (at your option) any later version.

These functions are distributed in the hope that they 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.

The text of the GNU General Public License, version 2, is available as http://www.gnu.org/copyleft or by writing to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

-- FrankHarrell - 11 Feb 2004