This is a collection of .pl files that have historically been bundled with the perl core but are planned not to be so distributed with core version 5.15 or later. relying on their presence in the core distribution is deprecated; they should be acquired from this package instead. from core version 5.13, until their removal, it is planned that the core versions of these libraries will emit a warning when loaded. the separately packaged version will not emit such a warning.