Illinois Statutes Chapter 725. Criminal Procedure § 5/113-4. Plea

(a) When called upon to plead at arraignment the defendant shall be furnished with a copy of the charge and shall plead guilty, guilty but mentally ill, or not guilty.

(b) If the defendant stands mute a plea of not guilty shall be entered for him and the trial shall proceed on such plea.

(c) If the defendant pleads guilty such plea shall not be accepted until the court shall have fully explained to the defendant the following:

After such explanation if the defendant understandingly persists in his plea it shall be accepted by the court and recorded.

(d) If the defendant pleads guilty but mentally ill, the court shall not accept such a plea until the defendant has undergone examination by a clinical psychologist or psychiatrist and the judge has examined the psychiatric or psychological report or reports, held a hearing on the issue of the defendant's mental condition and is satisfied that there is a factual basis that the defendant was mentally ill at the time of the offense to which the plea is entered.

(e) If a defendant pleads not guilty, the court shall advise him at that time or at any later court date on which he is present that if he escapes from custody or is released on bond and fails to appear in court when required by the court that his failure to appear would constitute a waiver of his right to confront the witnesses against him and trial could proceed in his absence.