The Canadian order of precedence is a nominal and symbolic hierarchy of important positions within the governing institutions of Canada. It has no legal standing but is used to dictate ceremonial protocol. All units of the Canadian Armed Forces also have an order of precedence that determines seniority; it often decides such matters as which unit forms up to the right (senior side) of other units on a ceremonial parade, or the order in which marches or calls are played at a mess dinner.