An apparatus comprising a polarity switch. The press dies are used to press a plate member. A developer may select a reference and indicate that a folded view is to be shown for the data corresponding to the reference. Further, the control unit is adapted for selectively operating the catalytic converter based on a demand of water and oxygen depleted air. The invention also generally provides for linking or joining through recombination a number of molecules andor compounds which may be the same or different. A variable map is formulated that identifies the changed variables.