separation of the legislative, executive and judicial branches, and prohibits any branch from exercising powers “properly belonging to another.” Ill. Const. 1970, art. II, sec. 1.
The judicial power is vested in a supreme court, appellate courts and circuit courts (Ill. Const. 1970, art. VI, sec. 1), and the general administrative and supervisory authority over all courts “is vested in the Supreme Court and shall be exercised by the Chief Justice in accordance with its rules” (Ill. Const. 1970, art. VI, sec. 16). The term “supervisory” was employed to fortify the concept of a centrally supervised court system. Ill. Ann. Stat., Const. of 1970, art. VI, sec. 16, Constitutional Commentary, at 527-28 (Smith-Hurd 1971).
This court may provide by rule for direct appeals from the circuit court to this court (Ill. Const. 1970, art. VI, sec. 4(b)); by rule for appeals from the appellate court (Ill. Const. 1970, art. VI, sec. 4(c)); by rule for interlocutory appeals (Ill. Const. 1970, art. VI, sec. 6); and by rule “for expeditious and inexpensive appeals” (Ill. Const. 1970, art. VI, sec. 16).
Although the Constitution of 1970 does not define judicial power, it is an exclusive grant of all such power to the courts. (Agran v. Checker Taxi Co. (1952), 412 Ill. 145, 149; People v. Callopy (1934), 358 Ill. 11, *14; People v. Bruner (1931), 343 Ill. 146, 157.) If the power is judicial in character, the legislature is expressly prohibited from exercising it. Agran v. Checker Taxi Co. (1952), 412 Ill. 145, 149; People v. Bruner* (1931), 343 Ill. 146, 157.
This proposition has been repeated on multiple occasions prior to the Constitution of 1970, which conferred responsibility for the administrative and supervisory power “over all courts” in the supreme court (Ill. Const. 1970, art. VI, sec. 16). People v. Lobb (1959), 17 Ill. 2d 287, 299; Agran v. Checker Taxi Co. (1952), 412 Ill. 145, 149; People v. Callopy (1934), 358 Ill. 11, 14.