3.2. The Perl Library

The most approachable part of the source code, for Perl programmers, is the Perl library. This lives in lib/, and comprises all the standard, pure Perl modules and pragmata that ship with perl.

There are both Perl 5 modules and unmaintained Perl 4 libraries, shipped for backwards compatibility. In Perl 5.6.0 and above, the Unicode tables are placed in lib/unicode.