A nozzle has a nozzle surface area and a nozzle rim, on which first and second guiding devices are alternatingly provided in the circumferential direction, where the first guiding devices are of the nozzle-type design and the second guiding devices are of the diffuser-type design. For an erase pulse on a PHINES memory device, two additional pulses can be utilized. The wall panels are quickly erected by inserting an upper edge of each panel into the channel and swinging the panel onto the foundation where it is claimed in place on the foundation. , 32, of the data strings can be searched at the same time. The button includes a head portion and a shaft portion.