Hi drlecb. There are a few ways to include sample files with your program on Perlmonks. To include it like you did and have the Perl program still be runnable you can add __DATA__ or __END__ after your Perl program and anything after it will be treated as data or comments. Another way is to start a new code section for your sample file with  <c> ... </c> so that the monks can click download for the sample file.

Here is an example of using __DATA__

use warnings;
use strict;

while(<DATA>){
    my $line = $_;
    print $line;
}
__DATA__
Line 1
Line 2
Line 3
[download]