#!/usr/bin/env perl
use strict;
use warnings;
use PDF::Reuse;

open my $fh, '>', 'file.tex' or die $!;
print $fh 
'
\documentclass{article}
\begin{document}
Nothing to see here.
\end{document}
', "\n";

system "pdflatex file.tex";

prFile( 'result.pdf' );
prDoc( 'file.pdf' );
prEnd();