When a process is swapped out of memory, a record of the sharable memory pages of the process is maintained. A plurality of serration is installed at the middle part of the male terminal for fastening the male terminal inside the insertion holes. The highly compressed hexahedral fibrous material has a packing density of at least 300 kgm3. Also, in some cases, in combination with the update, various modifications may be determined for the second portion of data.