(1) Any determination, specification, approval, declaration, direction, requirement, guideline or notification made, issued or given by the Minister under, or for the purposes of, this Act must be made, issued or given in writing.
(1A) The issue of a guideline must be notified in the Gazette .
(1B) The notification must set out the address of the place from which copies of the guideline may be obtained.
(2) Where a matter specified in an instrument signed by the Minister has been varied by another such instrument, a reference in this Act to that matter is a reference to that matter as so varied.