(a)In part 325 of subchapter A and in this subchapter, unless the context requires otherwise:
(1)Words imparting the singular include the plural;
(2)Words imparting the plural include the singular;
(3)Words imparting the present tense include the future tense.
(b)In this subchapter the word—
(1)Officer includes any person authorized by law to perform the duties of the office;
(2)Shall is used in an imperative sense;
(3)Must is used in an imperative sense;
(4)Should is used in a recommendatory sense;
(5)May is used in a permissive sense; and
(6)Includes is used as a word of inclusion, not limitation.