"new taxation code" has the same meaning as taxation code has in the Treaty.
"old taxation code" has the same meaning as Taxation Code had in the Petroleum
(Timor Gap Zone of Cooperation) Act 1990 immediately before 20 May 2002.
If an expression used in subsection 17(2) or 18(1) is also used in the oldtaxation code, the expression has the same meaning as in the old taxationcode.
(3)
If an expression used in subsection 17(3) or 18(2) is also used in the newtaxation code, the expression has the same meaning as in the
new taxation code.