As spotted by Halo modder Kiera on Twitter, some of the documentation for Halo 2 contains material directly from Bungie circa the early 2000s. With it are a few development images that few have ...

That enabled Mister Monopoli to use his experience with Halo 2 to make AUP possible in Combat Evolved. If all of this is lost on you (don't worry, it's lost on me too), you don't have to fear.