1. An information processing apparatus, comprising: display control means for mutually superposing and displaying a plurality of selection item display elements indicative of a plurality of selection items respectively on a display unit with a plurality of data and logical storage locations for the plural data being the selection items respectively, and displaying a plurality of item contents display elements indicative of the contents of the selection items corresponding to the respective plural selection item display elements on the display unit such that the contents can be visually confirmed; and operation means for carrying out a predetermined operation for the superposed and displayed plural selection item display elements; wherein the display control means shifts and displays an arbitrary selection item display element among the superposed and displayed plural selection item display elements based on the predetermined operation by the operation means such that a page of a book is spread.