In all proceedings and after all parties of record have been given copies, the prepared testimony of a witness on direct examination may be incorporated in the record as if read or received as an exhibit. The prepared testimony may be in narrative or question-and-answer form. The witness shall be sworn and shall identify the testimony. The witness is subject to cross-examination, and the prepared testimony is subject to a motion to strike in whole or in part.
40 Tex. Admin. Code § 850.79