The original version of the Little Man Computer used op code 7 (i.e., instruction

The original version of the Little Man Computer used op code 7 (i.e., instruction 700) for a COFFEE BREAK instruction instead of op code 0. What is the advantage of using 000 for the COB instruction instead of 700? (Hint: Consider what happens if the programmer forgets to put a COB instruction at the end of a program.)