Ill. Admin. Code tit. 74, § 790.20
Except as otherwise provided by this Part or by the Court of Claims Act [705 ILCS 505], pleadings and practice shall follow the Civil Practice Law [735 ILCS 5/Art II] and the Rules of the Supreme Court of Illinois.
(Source: Amended at 24 Ill. Reg. 8228, effective July 1, 2000)