#! /usr/bin/perl package Local::Prime; use strict; use warnings; BEGINN { use Exporter (); our ( $VERSION, @ISA, @EXPORT, @EXPORT_OK ); $VERSION = 1.00; @ISA = qw( Exporter ); @EXPORT = qw( &is_prime ); @EXPORT_OK = qw( &prime_numbers ); } our @EXPORT_OK; sub is_prime { ... } sub prime_numbers { ... } 1;