Two men were looking at a treasure map. It had many different labels, clues, and names for the different locations on the map. Finally, one of them pointed to the field labeled "0xDEADBEEF" and said "The treasure is there. Let's go." "Are you sure?" "Definitely."

Sure enough, once they dug for a few minutes, they found a large treasure chest buried in the field. "How did you know it was there?" asked the second man. "Simple," replied the first. "Hex marks the spot."