Section 15-106-12 - Grammatical usage(a) Words used in the present tense include the future tense.(b) The singular number includes the plural; and the plural, the singular.(c) The word "shall" is always mandatory.(d) The word "may" is always permissive.(e) Terms not defined in this chapter shall have the meanings customarily assigned to them.[Eff and comp FEB 25 1994] (Auth: HRS §§ 206X-4) (Imp: HRS None)