Rules of Court
Section 4. Order and examination. - If the court is satisfied that the perpetuation of the testimony may prevent a failure or delay of justice, it shall make an order designating or describing the persons whose deposition may be taken and specifying the subject matter of the examination and whether the depositions shall be taken upon oral examination or written interrogatories. The depositions may be taken in accordance with Rule 23 before the hearing. (4a, R134)