Can't speak for the original author but if I had to guess: Files on a world writable shared network volume, as this was a "classic" in school settings ;-) No m

Can't speak for the original author but if I had to guess: Files on a world writable shared network volume, as this was a "classic" in school settings ;-) No matter the decade, allow some pupils a shared network volume somewhere, they'll soon or later write a chat app with whatever programming language they can get their fingers on in that network, at least that was my experience. I did it, heard from other schools were the same happened.