(1) A person in possession of a cheque may add a crossing to the cheque notwithstanding that, when the cheque came into the person's possession, a crossing had already been added to the cheque.
(2) A person in possession of a cheque that, when it came into the person's possession, bore across the front of the cheque 2 parallel transverse lines, without the words not negotiable between, or substantially between, the lines, may add those words between, or substantially between, the lines.