(1)Where at any diet the accused tenders a plea of guilty to the indictment or any part thereof he shall do so in open court and, subject to section 70(7) of this Act, shall, if he is able to do so, sign a written copy of the plea; and the judge shall countersign such copy.
(2)Where the plea is to part only of the charge and the prosecutor does not accept the plea, such non-acceptance shall be recorded.
(3)Where an accused charged on indictment with any offence tenders a plea of guilty to any other offence of which he could competently be found guilty on the trial of the indictment, and that plea is accepted by the prosecutor, it shall be competent to convict the accused of the offence to which he has so pled guilty and to sentence him accordingly.