The President is vested with a discretionary power by virtue of which he may, in his honour and conscience, take any measures that he deems useful to discover the truth. He may, if he considers it appropriate, refer the matter to the court, which shall rule in accordance with the conditions set out in Article 316.
During the debates, he may call, if necessary by warrant, and hear any persons or have brought to him any new documents which appear to him, from the developments given at the hearing, to be useful in ascertaining the truth.
Witnesses called in this way do not take an oath and their statements are considered to be information only.