The parties may enter into evidence as an exhibit a written stipulation as to any fact or matter at issue of substance or procedure under this article. The hearing officer may choose to approve or disapprove any such stipulation or recommend modification as a condition for approval. Oral stipulations may be made on the record. Any party sponsoring an exhibit shall furnish a copy to each party represented and to the hearing officer. Briefs or statements of position submitted to the hearing officer and opposing parties at least three days prior to the commencement of the proceeding shall be read and considered by the hearing officer prior to making a determination, but such briefs or statements shall not be required. (Code 1979, § 34-180)