Section 680.50. Examination of witnesses on commission; interrogatories

1.    Following  an  order  for  the  issuance of a commission and the
  court's designation of the witnesses to be examined thereon, each  party
  must  prepare  interrogatories  or questions to be asked of each witness
  who is to be examined upon his or its request, and must submit the  same
  to  the  court and serve a copy thereof upon the other party.  Following
  such submission and service, such other party may  in  the  same  manner
  submit  and serve cross-interrogatories or questions, to be asked of the
  witness following his examination upon the direct inquiry.
    2.  After all such interrogatories and cross-interrogatories have been
  submitted and served, the court may examine them and,  with  opportunity
  for  counsel  to  be  heard,  exclude  and  strike any question which it
  considers irrelevant, incompetent or otherwise improper or violative  of
  the rules of evidence which prevail at a criminal trial.