This software is copyright (c) by Christian H. Geuer-Pollmann.

This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.

Terms of the Perl programming language system itself

a) the GNU General Public License as published by the Free
   Software Foundation; either version 1, or (at your option) any
   later version, or

b) the "Artistic License"

For the full text of these licenses, please see:
https://dev.perl.org/licenses/
