Ah, I remember seeing this when it was first posted in comp.lang.c and being duly impressed. I had definitely a printed typeset copy in various work environments.

Remember, it was a time when the language had no function prototypes, and we were seeing more and more code abusing parameter passing and value returning by "knowing" what happens.

Re-reading it now, I'm amazed on how general the commandments are, the underlying wisdom applicable to any language and system.