Strictly speaking, the VC is only a deputy to the chancellor of the university, but the chancellor is usually a prominent public figure who acts as a ceremonial figurehead only (e.g., the chancellor of the University of Cambridge for 36 years was Prince Philip), while the vice-chancellor acts as the day-to-day chief executive. An assistant to a vice-chancellor is called a pro-vice-chancellor or deputy vice-chancellor; these were traditionally academics who were elected to take on additional responsibilities in addition to their regular teaching and research for a limited time, but are now increasingly commonly permanent appointments. In some universities (e.g. in Australian universities: Deakin University, Macquarie University), there are several deputy vice-chancellors subordinate to the vice-chancellor, with "pro-vice-chancellor" being a position at executive level ranking below "deputy vice-chancellor".