(1) If required to do so by section 24, the informant must serve a preliminary brief on the accused.
(2) At any time after the commencement of a proceeding, the accused, by written notice to the informant, may request that a preliminary brief be served.
(3) If the accused gives notice under subsection (2), the informant must serve on the accused a preliminary brief within 14 days after receipt of the notice.
(4) Nothing in this section prevents the informant from serving a preliminary brief on the accused at any other time.