See Getopt::Long. From its pod: 

Getopt::Long encourages the use of Pod::Usage to produce help messages
+.
For example:

    use Getopt::Long;
    use Pod::Usage;

    my $man = 0;
    my $help = 0;

    GetOptions('help|?' => \$help, man => \$man) or pod2usage(2);
    pod2usage(1) if $help;
    pod2usage(-exitstatus => 0, -verbose => 2) if $man;

    __END__

    =head1 NAME

    sample - Using Getopt::Long and Pod::Usage

    =head1 SYNOPSIS
...

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In reply to Re: Displaying in-line POD as man-pages 'on-the-fly' by shmem
in thread Displaying in-line POD as man-pages 'on-the-fly' by rapide

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