11-2-1: RULES OF WORD CONSTRUCTION:
   A.   Words used in the present tense shall include the future; words used in the singular number shall include the plural number, and the plural the singular.
   B.   The word "shall" is mandatory and not discretionary; the word "may" is permissive.
   C.   The word "building" shall include the word "structure", and the word "lot" shall include the word "plot". (Ord. 91-6, 10-7-1991)