For the purposes of this Part, certain terms and words used herein shall be interpreted as follows:
A. Words used in the present tense include the future tense; the singular number includes the plural, and the plural number includes the singular; words of masculine gender include feminine gender; and words of feminine gender include masculine gender.
B. The word "includes" or "including" shall not limit the term to the specific example, but is intended to extend its meaning to all other instances of like kind and character.
C. The word "person" includes an individual, firm, association, organization, partnership, trust, company, corporation, unit of government, or any other similar entity.
D. The words "shall" and "must" are mandatory; the words "may" and "should" are permissive.
E. The words "used or occupied" include the words "intended, designed, maintained, or arranged to be used, occupied or maintained."