Please consult the manual of Regexp::Common for a general description
of the works of this interface.
Do not use this module directly, but load it via Regexp::Common.
This module offers patterns for credit card numbers of several major
credit card types. Currently, the supported cards are: Mastercard,
Amex, Diners Club, and Discover.
This software is Copyright (c) 2001 - 2009, Damian Conway and Abigail.
This module is free software, and maybe used under any of the following
1) The Perl Artistic License. See the file COPYRIGHT.AL.
2) The Perl Artistic License 2.0. See the file COPYRIGHT.AL2.
3) The BSD Licence. See the file COPYRIGHT.BSD.
4) The MIT Licence. See the file COPYRIGHT.MIT.