New South Wales Consolidated Acts(cf Act No 34, 1949, s 19)
When this Act or the regulations confer power on the Minister, the Authority
or an authorised officer:
(a) to grant an exemption or partial exemption from, or reduction of, tax, or
(b) to grant an approval, or
(c) to give a direction, or
(d) to make a request, or
(e) to do any act, matter or thing,the Minister, Authority or officer, as the case may be, is also empowered to revoke or vary the exemption, partial exemption, approval, direction, request, act, matter or thing.