A stipulation is an agreement among parties intended to establish one or more operative facts in an adjudicative proceeding. The council encourages parties to enter stipulations of fact. The parties to an adjudicative proceeding before the council may agree to all of the facts or any portion of the facts involved in the proceeding. The parties to a stipulation may file it in writing or enter it orally into the record. A stipulation, if accepted by the council, is binding on the stipulating parties. The parties may present the stipulation as evidence at the hearing. The council may reject the stipulation or require proof of the stipulated facts, despite the parties' agreement to the stipulation.