SPMLOAS!
Another interesting puzzle on Marathon's Story this weekend: what does SPMLOAS stand for? If you're scratching your head, Bungie has a history of putting these acronymns in their product UPC codes, and this newest one comes from the just released Total Codex. It won't be long before someone cracks it, I'm sure... if you're versed in Bungie lore and sayings, perhaps try your head at it.