A large business center. A lot of companies and organizations. On the reception, a journal in which employees, leaving work, write for the fire condition of offices (whether the lights, electrical appliances, water, windows are closed).
Records in the magazine:
311: The Standard
Chapter 12: The Norm
517 is normal
Chapter 102: The Norm
407: by Nano
820: The Rules
702 is normal
305 is OK
902: 305th, the burning