#!/usr/local/bin/perl
use strict;
use warnings;
use YAML;
use Data::Dumper;
my $n=1;
print "DATA[",$n++,"]:$_" for <DATA>;
print Dumper(\%ENV);
print YAML::Dump(\%INC);
use Test::More 'no_plan';
is(1,1);
is(1,0);
__DATA__
use this instead of STDIN
like this.

(define (outer z)
  (define x 2)
  (define (in1)
    (define z (+ 20 x))
    (in2))
  (define (in2)
    (set! z (* z 10))
  z)
  in1)

(define closure (outer 30))
(closure)