The Illinois Rule To Show Cause is a type of court order that requires a party to appear in court and explain why they should not be held in contempt or why they should not be required to comply with a certain court order. It is most commonly used in cases involving child support, contempt of court, or other civil matters. The Illinois Rule To Show Cause is a formal process whereby the court issues a written notice to the party, who then must appear in court and explain why they should not be held in contempt or why they should not be required to comply with a certain court order. There are two types of Illinois Rule To Show Cause: 1. Preliminary Rule To Show Cause: This is a court order issued to a party prior to a hearing or trial. It requires the party to appear before the court and explain why they should not be required to comply with a certain court order. 2. Final Rule To Show Cause: This is a court order issued to a party after a hearing or trial. It requires the party to appear before the court and explain why they should not be held in contempt or why they should not be required to comply with a certain court order.