To lay out plural sets of character string groups in one value composition frame by an easy method.

When plural sets of character string groups are laid out in one value composition frame, a character string showing information on the same kind with a character string specified as a common item is registered as item data (S120d, S120e) as to only one record in the sets of character string groups. Character strings as to other sets of character string groups are not registered as item data. Consequently, plural sets of character string groups can be arranged in one value composition frame in one representative state for common character strings.