It means that the module is bundled with the source distribution of perl. Anyone who downloads and installs that perl version from source gets the module as part of the deal. The perl installed by default by your O/S does not necessarily include the core modules. If you think it should, please contact your O/S maintainer.

In reply to Re^7: Assigning default values to function arguments which may be “empty” by hippo
in thread Assigning default values to function arguments which may be “empty” by Wyrdweaver

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