735 ILCS 5/17-102: Complaint.

The verified complaint shall particularly describe the premises sought to be divided, and shall set forth the interests of all parties interested therein, so far as the same are known to the plaintiffs, including tenants for years or for life, and of all persons entitled to the reversion, remainder or inheritance, and of every person who, upon any contingency, may be or become entitled to any beneficial interest in the premises, so far as the same are known to the plaintiffs, and shall ask for the division and partition of the premises according to the respective rights of the parties interested therein, or in accordance with the Uniform Partition of Heirs Property Act.