Here's a thought that came to mind...

ZXNet echo conference «code.zx»

From Alexandr Sinyakov To All 22 November 2005

Hello axor And then no one thought what would happen if an inquisitive brain like mine tried call a subfunction with a number greater than the number of subfunctions for this function? B At best, there will be a call to a completely different program, and at worst, the computer will freeze. Either It is necessary to install protection against such insanity, or get rid of subfunctions.