Perl Modes
Object-Oriented Programming Frameworks
#  0  Perl 5      low    magic (blessed hash only)
#  1 RPerl        low    magic old
#  2 RPerl        low    magic new
#  3 RPerl        medium magic
#  4 RPerl & Moo  medium magic (AKA RMoo AKA Skinny Moo(se))
#  5         Moo  medium magic (no  MOP)
#  6         Moo    high magic (yes MOP)
#  7         Mouse  high magic (yes MOP)
#  8         Moose  high magic (yes MOP)
#  9         MooseX deep magic (yes MOP)  (also Damian Conway's Dios???  Stevan Little's UNIVERSAL::Object & MOP & Moxie???)
# 10  Perl 6        dark magic (yes MOP)