Code of Organization and Civil Procedure (Cap. 12), article 580

580. (1) In cross-examination, a witness may only be questioned on the facts deposed in his examination, or on matters calculated to impeach his credit. (2) When the party cross-examining desires to prove by the same witness any circumstance not connected with the facts deposed in the examination, he must, unless the court, for just cause, shall direct otherwise, produce such witness in due time and examine him as his own witness; and in such case, it shall be lawful for the court, upon the oral demand of such party, to order the witness not to leave the court in order that he may be again called and questioned; and such order shall have the effect of the subpoena mentioned in article 568(1). Questions arising out of answers given by witness.