(1)  In any Act –

(a) the word "must" is to be construed as being mandatory; and

(b) the words "is to" and "are to" are to be construed as being directory; and

(c) the word "may" is to be construed as being discretionary or enabling, as the context requires.

(2)  Subsection (1) applies only in respect of a provision of an Act if that provision is passed after the commencement of the Justice Legislation (Miscellaneous Amendments) Act 2000 .