This is a collection of Perl::Critic policies that are not included in the Perl::Critic core for a variety of reasons: Experimental Some policies need some time to work out their kinks, test usability, or gauge community interest. A subset of these will end up in the core Perl::Critic someday. Requires special dependencies For example, some policies require development versions of PPI (or some other CPAN module). These will likely end up in the Perl::Critic core when their dependencies are fulfilled. Peripheral to Perl For example, the Editor::RequireEmacsFileVariables policy is metacode. Also, the Miscellanea::RequireRcsKeywords policy pertains to the development process, not the code itself. These are not part of Perl::Critic's mission. Special purpose For example, policies like CodeLayout::RequireASCII designed to scratch itches not felt by most of the community. These will always remain in a Perl::Critic supplement instead of in the core. WWW: https://metacpan.org/release/Perl-Critic-More