In a small-scale medical facility, appropriate storage and management of medical images whose storage is mandatory for a predetermined period becomes easier. Thus, -7-chloro-N-benzobthiophene-2-carboxamide and pharmaceutically acceptable salts thereof can be used at unexpectedly low doses to improve cognition. The memory controller may include a scheduler for scheduling requests. A part of the tray 11, overlapping with the sheet tray 10, has a thin portion 11a. The system comprises a recipient terminal configured to receive a notification of a package delivery, a delivery mobile terminal configured to determine its own location, and a server configured to send the notification to the recipient terminal based on the location of the delivery mobile terminal and based on information associated with the recipient terminal. The vertical stack structure defines two or more etched holes each extending from the substantially planar top surface to the oxidized peripheral region.