Section 181

the officer or other person conducting the prosecution need not open his case, but may forthwith produce his evidence;

when the accused is called upon to enter on his defence, he or his advocate may before producing his evidence open his case stating the facts or law on which he intends to rely and making such comments as he thinks necessary on the evidence for the prosecution, and if the accused gives evidence or witnesses are examined on his behalf may sum up his case; and

the officer or other person conducting the prosecution shall have the right of reply on the whole case if the accused or his advocate has summed up his case. [180