I have one of these frames and can't find much info on it. Anyone have one, heard of it or played with it? Here are the measured specs: Rossignol DT 6.40 Silver/grey color with purple writing Graphite/fiberglass composite Variable beam 12.8 oz. (strung) 9 pts. HL (strung) ** note on the throat states: "Moment of inertia electronically controlled by Rossignol according to French AFNOR standard." What does the throat note signify?