9-2-1: INTERPRETATION OF TERMS OR WORDS:

For the purposes of these regulations, certain terms or words used herein shall be interpreted as follows:

   A.   The present tense includes the past or future tense, the singular includes the plural and the plural includes the singular;

   B.   The word "shall" is mandatory; "may" is permissive; the word "should" is preferred; and

   C.   The masculine shall include the feminine. (1982 Code)