Section 138
Order of examinations and direction of re-examination
Witnesses shall be first examined-in-chief, then, if the adverse party so desires, cross-examined then, if the party calling them so desires, re-examined.
(2)
The examination and cross-examination must relate to relevant facts, but the cross-examination need not be confined to the facts to which the witness testified on his examination-in-chief.
(3)
The re-examination shall be directed to the explanation of matters referred to in cross-examination; and if new matter is, by permission of the court, introduced in re-examination, the adverse party may further cross-examine upon that matter.
(4)
The court may in all cases permit a witness to be recalled either for further examination-in-chief or for further cross-examination, and if it does so, the parties have the right of further cross-examination and re-examination respectively.