Magic Debug Values: “…are specific values written to memory…so that it will later be possible to tell whether or not they have become corrupted…. Memory is usually viewed in hexadecimal, so memorable repeating or hexspeak values are common.” Though not a programmer, I’d seen some of these in various other contexts. Particularly fond of 8BADF00D, BADC0FFEE0DDF00D, D15EA5E, DEFEC8ED, and FEE1DEAD.