order at order change a gap is pulled and the robot quickly positions the slit head 11 11 a or 13 a in the gap as the tailing out order clears the slitter alternately the order change region as described in u s patent application publication no us2006 0090617 and shown in fig5 thereof could be extended in length to give the robot time as required to reposition the additional slitting tool this aspect of the invention along with the asymmetric trim allows order change from or to a six out from or to a four out or less using a gap style order change with a minimal complement of six total internal slit heads 11 11 a another aspect of the current invention is the use of a rules based order scheduling module to accommodate the specific limitations of the single axis plunge slitter that has a complement of six internal slit heads in the normal scheduling of a corrugator the scheduling software assumes that capability exists for solutions involving numbers of outs of successive orders in any combination up to the maximum possible the solutions also assume the use of symmetric trim by the slitter setup controls and so only provides web width and out widths to derive a trim combination solution the goal of this scheduling software is to pick order solutions that minimize the overall average trim widths in a wet end paper setup there is a problem with this type of scheduling system when used on a corrugator with a slitter scorer of the configuration of the present invention the problem is that in the absence of any rules to the contrary the schedule solutions may well involve orders with number of outs.