A surgical instrument comprising an elongate channel assembly that has a distal end and a proximal end and is constructed to operably support a staple cartridge assembly therein. The non-conjugated diene comonomer can be a dialkenyl phthalate. A first graphic driving indication is in the form of a traffic lane change indication pointing out to the driver the direction from a traffic lane traveled at the beginning of the maneuver to a desired traffic lane. A control means is used for controlling physical characteristics of the compound resonator to adjust its optical storage characteristics. More particularly, the invention concerns an acoustically actuated droplet emitter which is provided with a continuous, high velocity, laminar flow of cooling liquid in addition to a stagnant pool of liquid to be emitted as droplets.