The High Court may, in any cause pending in the Court and at any stage of the proceedings:
(a) order the examination of a person upon oath orally or on interrogatories before the Court, an officer of the Court or another person at any place within Australia; or
(b) order that a commission issue to a person, either within or beyond Australia, authorizing him or her to take the testimony upon oath of a person orally or on interrogatories;
and the Court may:
(c) by the same or a subsequent order give any necessary directions concerning the time, place and manner of the examination; and
(d) empower any party to the cause to give in evidence in the cause the testimony so taken on such terms (if any) as the Court directs.