An information processor includes an information processing unit that executes an information process by reference to a setting, a setting unit that executes a provisional selection to select one or more selection items among multiple selection items and a definitive selection for deciding the provisional selection by reference to an operation by a user and determines a setting of the information process by reference to a result of the definitive selection, a determination unit that determines a selection item to be explained by reference to one or more selection item provisionally selected by the setting unit, and an explanation outputting unit that outputs an explanation for the user for the selection item to be explained which is determined by the determination unit.