The powers of an ADM are primarily created by statute, which is known as the "enabling statute". These powers are limited by the legislative authority of the enabling government provided under section 91 or 92 of the "Constitution Act, 1867". Superior Courts (known as Section 96 Courts) have an inherent power at common law to review any decision of an ADM. A judicial review allows for the court to consider the entire decision-making process, including the process, the findings of fact and of law. The power of judicial review is found either in the enabling statute or by virtue of the common law. The common law powers are derived from the four original writs of "certiorari", prohibition, "mandamus" and "habeas corpus".