1. A method of providing to a user a dictionary of multi-touch gestures, each of the gestures comprising a chord and a motion associated with the chord, the method comprising: identifying a chord presented to the multi-touch interface by the user; and displaying a dictionary entry for the identified chord, the dictionary entry comprising a visual depiction of one or more motions associated with the identified chord and, for each of the one or more motions associated with the identified chord, a meaning of a gesture comprising the identified chord and the motion.