It's a vent to mainline pilots in general. But back to the thread at hand. My tool award goes to the lady who sat by beside me. At least 6 months prego with a lap child. The door hasn't even closed yet and she stands the little boy up on her knees. Rips down his pants and changes his diaper right there. Half way thru she looks over and says "hope you don't mind......" I love deadheading.