When changing a plurality of displayed items to a plurality of other items that are at least partially different, at least one selected item of the plurality of displayed items is identifiably displayed, and its display position is stored. After the plurality of displayed items have been changed to the plurality of other items, an item displayed at the same position as the stored display position of the selected item before the change is identifiably displayed. This improves the operability when simultaneously displaying a plurality of items.