A method for previewing an output character, and an electronic device are provided. At the time of starting an engine, the main power source supplies power to a starter. The flow control structure includes divergent flow control surfaces extending downward along opposite sides of a contiguous edge, each downwardly extending divergent flow control surface flaring in an outward direction toward a respective perimeter defining an outside edge of the bifurcated port and communicating therewith. The channels have exits that can be manually reached by an operator. The alarm module is programmed to generate an alarm signal when the meal-bolus program module does not control the pump mechanism to deliver a meal bolus within a predetermined period of time.