Gravitational Lensing distribution permissions

This program and the accompanying documentation are Copyright (C) 2001 - 2002
by Kwakkelflap. You are allowed to redistribute it, provided that all
the files in the original archive are distributed together and no changes
are made to any file in the distribution. You can't charge for the
program, only for distributing it. You have to clearly identify us
(Maarten Vandenbroucke & Wouter Dhondt) as the authors.

The same things in English:

- If you copy it, don't claim that you've made it yourself, or change it in any way; and copy both program and documentation.

- You are free to offer the program on your web page. All I ask for is that you give a link back to mine, and that you state that the program was made by Maarten Vandenbroucke & Wouter Dhondt