This is a program to make those 'random snow' pictures that can become a 3D
picture if your brain is attuned properly. Not everyone is capable of seeing
these pictures.

The program has a doc check, where you look at a picture in the manual which
contains codes that you enter to gain access. Obviously, if your sight is not
good enough, there is no point using it!

Luckily, after photocopying, scanning and turning into a PDF, the 3D effect
still works!

So, here is the Instruction Manual.