I have used that piece of software about or almost 20 years ago, I did not even remember about it until I saw you mentioning it here. I did not know (or at least did not remember at all) it was written in Perl. Well, at the time, I am not really sure I even knew what Perl was (or maybe I had heard the name and vaguely knew it was an obscure scripting language, but certainly not more than that). I guess it worked probably because Perl was pre-installed on my Slackware Linux distribution of the time. I had no idea that this thing still existed.