The present invention is generally directed to a system, method and article of manufacture for accessing data represented abstractly through an abstraction model. A clock generator modifies a spread of the system clock in response to the determined clock spread. The terminal is operable for reading the characterizing parameter from the peripheral device when the device is coupled to the terminal. After identifying regions of high loads, the method comprises applying the patches as needed to avoid sores, calluses, blisters and abrasions. The holder may also list information about the person that owns the necessary items so that any misplaced may be more easily located. The mark provides a fixed and known location that can be used to establish a position of the optical sensor relative to the print medium.