A medical in-line flow control clamp device which is arranged coaxially along the longitudinal axis of an infusion tube or the like, and which has a sleeve connected to the tube and a slide having an arm movably mounted on and having a part biased toward the sleeve in a manner where the arm bears against and pinches the tube when the slid is moved relative to the sleeve. A method of finding documents comprising, ranking documents according to relevance to form a ranked relevance list, ranking documents according to type to form a ranked type list, and combining the ranked relevance list and the ranked type list to form a list of documents ranked by relevance and type. IVC variable control for making the IVC timing of the intake valve 30 variable according to load is selected for operation in a region of relative low loads, and intake valve closing retardation control for controlling the intake valve 30 in fully retarded IVC timing is selected for operation in a region of relatively high loads. The user interface has a user request input permitting the user to initiate a request for explanatory information relating to a particular vehicle operation input by utilizing the user request input and the particular vehicle operation input in a predetermined fashion. The pointing control signals may be transmitted as radio frequency signal employing a radio frequency signal transmitter, or infrared signal employing an infrared signal transmitter.