These answers direct attention to the effect of the invalidity of the taking order in relation to the zoned portions of lots 7 and 8 (and 30). That requires consideration of the operation of s 179 of the Land Act. The taking order recited that the relevant certificates of title were to be cancelled and new certificates of title to be issued for the lands taken. Provision for cancellation of certificates of title in the taking order was authorised by s 178(2)(f) of the Land Act. Cancellation was evidently to be effected pursuant to, but not by operation of, the order. Section 179(a) provided that on the registration of the taking order it would have effect "according to its terms". By s 179(b), which applied to the taking order in this case, every registered and unregistered interest in the land would be extinguished. The "registration" process applicable to the taking order was not elaborated in s 179. The term "registered" was defined in s 3(1) of the Land Act as "registered under Part IIIB of the TLA", TLA being defined in s 3(1) as the Transfer of Land Act. However, Pt IIIB does not make and, as the Court was informed by senior counsel for the WAPC, never has made provision for the registration of taking orders for the purposes of s 179. In this case the existence of the order was endorsed on the relevant certificates of title under the heading "Limitations, Interests, Encumbrances and Notifications". Its "registration" was not a process for which the Transfer of Land Act provided. It was a process for which the Land Act provided with the consequences set out in s 179. The endorsement of the order could not therefore be seen as the endorsement on the certificate of a registered interest for the purposes of the Transfer of Land Act. Given that s 179(b) allows for a partial extinguishment to save specified interests preserved pursuant to s 178(2)(a), it is, as a matter of construction, capable of an application limited to interests validly taken.