(See Interpretations related to this Section.)
For the purposes of this Code, certain words and terms used herein are defined as set forth in this and the following sections. Additional definitions applicable to Signs are set forth in Section 602. Additional definitions applicable to development impact fees and requirements that authorize the payment of in-lieu fees are set forth in Section 401. Additional definitions applicable only to Downtown Residential Districts are set forth in Section 890. Additional definitions applicable only to the North Beach Neighborhood Commercial District and the North Beach Special Use District are set forth in Section 780.3. Additional definitions applicable only to the Bernal Heights Special Use District are set forth in Section 242. Additional definitions applicable only to Article 9, Mission Bay Districts, are set forth in Section 996. All words used in the present tense shall include the future. All words in the plural number shall include the singular number, and all words in the singular number shall include the plural number, unless the natural construction of the wording indicates otherwise. The word "shall" is mandatory and not directory. Whenever any of the following terms is used it shall mean the corresponding officer, department, board or commission or its successor of the City and County of San Francisco, State of California, herein referred to as the City: Assessor, Board of Supervisors, Planning Department, Department of Public Works, Director of Planning, Planning Commission, or Zoning Administrator. In each case, the term shall be deemed to include an employee of any such officer or department of the City who is lawfully authorized to perform any duty or exercise any power as a representative or agent of that officer or department.