In his or her summing up to the jury, the trial judge—
(a) must explain only so much of the law as is necessary for the jury to determine the issues in the trial; and
(b) must refer the jury to the way in which the prosecution and the accused have put their cases in relation to the issues in the trial but need not summarise the closing addresses of the prosecution and the accused; and
(c) need not give a summary of the evidence but, in accordance with section 66, must identify so much of the evidence as is necessary to assist the jury to determine the issues in the trial; and
(d) may use a combination of oral and written components.