A non-volatile memory device includes a first cell group including memory cells other than memory cells adjacent to a drain select transistor in a block, and a second cell group including the memory cells adjacent to the drain select transistor in the block. The document contains data of a first data type and is accessible by a first application for processing the first data type. Parent ions transmitted by the mass filter 3 are fragmented in the collision cell 4 and detected by an orthogonal time of flight analyser 5 which obtains a daughter ion mass spectrum. The wrapper specially processes information in a corresponding agent system. The two-way folder-type terminal can be used as if it were a conventional bar-type terminal, when the second and third housings are folded on the first housing, and can be used to enjoy multimedia programs and mobile games, when the second and third housings are unfolded from the first housing. One or more item listings for the item are identified.