In one embodiment, a method for increasing query traffic to a web site includes providing initial information pertaining to an initial object for presentation to a user, and providing connection information identifying a logical connection between the initial object and one or more additional objects for presentation to the user. Even if sequential inputoutput requests of the host are separated through a distribution processing to a plurality of paths, they are recognized on the device controller side and a countermeasure is taken. The estimated replacement time for the battery, particularly for a lithium battery in a pacing device, is easily estimated. A first thickness of the first portion is different from a second thickness of the second portion. The memory material of the memory unit can be a ferroelectric or electret material that can be polarized into two discernible polarization states, or it can be a material with a resistive impedance characteristic such that a memory cell of the material can be set to a specific stable resistance value by the application of an electric field. When the protruding part is accommodated within the second restriction groove, the sheet releasing mechanism is in a sheet-releasing status.