The invention pertains to an end position detector for movable switch parts which comprises a rod assembly and a housing, into which the rod assembly penetrates and in which at least one sensor for sensing an end position of the rod assembly is arranged. The embodiment described combines a split-magnet MRI system with a digital x-ray system. For unordered phrases, the proximity constraint defines a maximum span between keywords in the highest and lowest positions in the sorted set as MaxSpan=p, where p is a proximity and k is the number of keywords in the phrase. The seal member provided in the opening portion for preventing leakage of the developer from an end portion of the opening portion, wherein the seal member is in contact with the surface layer except for an end edge thereof. At least a subset of the second set of matching complete queries are sent to the client system. The processor processes the received packet by accessing the packet data access part while the received packet is being shifting through the plurality of registers.