[I]t looks fairly straight-forward: finger moves cursor, and the buttons down the button handle interaction and inventory.

I'm assuming here that "handle" is being used as a verb, since iPhones don't have anything I would consider to be a "button handle," though if it did, that would bring other grammatical problems in this sentence. My question here, though: What's this about "buttons down the button?"

Source: http://kotaku.com/5320873/monkey-island-now-on-your-iphone