An information recordingreproducing device which can record or reproduce the predetermined information quickly and properly is proposed. In one medication selection guidance method, information is received regarding a clinician-preferred medication prescription related to a selected patient, and based on at least one record of the selected patient, a specific information set is retrieved. The over-center mechanism includes a pair of levers held together by a single coil spring with trunnions on a first lever pivoting in bearing surfaces of a second lever. The counter associated with a resource is incremented when a resource becomes associated with a particular event. , N; and estimating a Doppler frequency shift based on the difference values. The cooking appliance lent to the customer for a certain term controls cooking of a food material delivered by the delivery agent, according to cooking sequence data specified by the output reservation sequence information, among a plurality of cooking sequence data stored beforehand.