The download didn't work for me - says it is not found
A cool thing you’ll notice in these PostScript files: seemingly random number sets. These are actually units of measurement specified in points! 612 x 792 points == 8.5 x 11 inches
Considering the age of some print shops hardware and software, this doesn't come as a surprise.
Its kinda weird that this is the coolest thing I've seen all day.