Administrative law is concerned with the relationship between courts and those who make decisions in the course of exercising administrative powers. In particular, administrative law focuses on the way in which and the extent to which courts review or oversee administrative decision making. Administrative powers are largely created by statute. Such legislation is often referred to as the "enabling legislation”. An action taken under the Crown's prerogative powers is also considered to be administrative action; however, the focus of these materials is on action taken under enabling legislation.