>"Ah!" he exclaimed, "Did you see how that flicker started from the top and moved to the down?" Guessing a typo, but it had me thinking about "moved to the dow

>"Ah!" he exclaimed, "Did you see how that flicker started from the top and moved to the down?" Guessing a typo, but it had me thinking about "moved to the down" for a while. Edit: Separately, there were other popular terminals that didn't have vent holes on the top. Not a great design choice if you can avoid it.