64 As the meanings of the Glossary cl 3(1)(a) and, thus, s 15(1) are clear without recourse to historical considerations, it is unnecessary for me to provide a detailed analysis of the arguments of the parties based on the legislative history of the LTA Act and the PD Act. It is sufficient for me to say that I accept the plaintiffs' argument that prior to the enactment of the PD Act, the LTA Act, read with the Town Planning and Development Act 1928 (WA) (Rep) (TPD Act) s 20(2), relevantly provided that land was subdivided when a plan of subdivision was endorsed with the approval of the, now, WAPC. The PD Act replaced the TPD Act but its purpose was to consolidate the existing planning legislation and not to change it, significantly. The explanatory memorandum to what was then the Planning and Development Bill, which became the PD Act, said that cl 135 'provides that approval is required for subdivision'. When the PD Act was enacted, consequential amendments were made to other Acts, including deleting the reference to the TPD Act s 20(2) in the Glossary cl 3(1)(a) and substituting a reference to the PD Act s 135.