A method, apparatus, and computer program product for managing communications between a plurality of applications are presented. At the end of a billing cycle, transaction totals may be weighted based on the type or number of items purchased by members of the group to making point or reward allocations into the pool. The PWM module includes a dithering circuit to accumulate fractional PWM control signals to reduce period jitter by increasing the effective resolution of the pulse width modulator. A sufficiently small quantity of cleaning composition remains in the actuator so that the cleaning composition itself will not clog the actuator. The at least one preformed solder element is reflowed to form a connection with the layer of printed solder. A tracking signal supplied by the inner loop to the integrating controller of the outer loop is used to avoid windup problems when the transmitted power is saturated.