#! /usr/bin/perl

use strict;
use warnings;

# Std Perl Modules
use Carp;
use File::Copy;
 ... actual list varies depends on script ...

# Our modules.
use FOO_X;
 ... actual list varies depends on script ...

#=======================
# Code begins...


# A trivial example
my $msg = foo_x_function( "hello" );

print "$msg\n"
exit 0;