An apparatus and method for backlighting a translucent image. Part roles are defined to represent common design elements as shared by distinct product views. The cured impression material retains the low profile impression cap which snaps free of the mating low profile impression alignment post. The novel beam forming compensates for a difference between an adaptive array antenna and a sector type antenna using appropriate beam steering according to the calculated linear system model, thereby improving performance and facilitating implementation. Upon receiving state information from any other node, the group state management unit, in accordance with the states of groups that are included in the state information, changes the states of external connection ports that belong to these groups. The vias, on a height level of each of the conductive line co-planes, are arranged only on one of the neighboring conductive line co-planes.