The Algorithm::C3 module implements the C3 algorithm. . C3 is the name of an algorithm which aims to provide a sane method resolution order under multiple inheritence. It was first introduced in the langauge Dylan, and then later adopted as the preferred MRO (Method Resolution Order) for the new-style classes in Python 2.3. Most recently it has been adopted as the 'canonical' MRO for Perl 6 classes, and the default MRO for Parrot objects as well.