 The update provisioned for an extended growth boundary and is reinforcing the aim of a "multi-centre" metropolitan area by lifting the hierarchic level of six "Principal Activity Centres" (PAC) to "Central Activities Districts" (CAD).The centres of Box Hill, Broadmeadows, Dandenong, Footscray, Frankston and Ringwood will thus have to provide similar services and functions as central Melbourne.There are 93 Major Activity Centres, including