Delivering a page that includes a plurality of modules is disclosed. Beams from a laser light source illuminate a grating scale and plus-first-order-diffracted and minus-first-order-diffracted beams from the grating scale are diffracted and reflected so as to travel through their original optical paths. The propulsion system connects to the engine and propels the watercraft along a surface of a body of water using power from the engine. The controller is configured to receive an indication of an amount torque or power required by the motor, determine a conduction angle of the switched reluctance generator based on the amount of torque or power required by the motor; and energize the DC bus with the electrical power provided by the switched reluctance generator based on the optimal conduction angle. The processor may be also programmed to determine the batch process model from the at least one activity step selected, and display the at least one activity step in the at least one flowchart.