It was downloaded from http://programoj.esperanto.org.uy/angle/wprint.html

Upstream Author: Eduardo Trápani <etrapani@unesco.org.uy>

This software is copyright (c) 2000-2005 by Eduardo Trápani

You are free to distribute this software under the terms of
the GNU General Public License version 2.
On Debian systems, the complete text of the GNU General Public
License can be found in /usr/share/common-licenses/GPL file.