 Except for the older towns, estates and consolidated towns, most towns use the first digit of their block numbers to indicate the neighbourhood in which the block is located in.Each neighbourhood is in turn composed of multiple precincts, which are built on the concept of promoting communal exchanges and which are more secure.While older precincts may merely involve dividing rows of identical blocks in relatively close proximity without any other real interaction with each other, newer precincts are designed to physically envelop a common space, or centred around some kind of communal facility such as a multi-storey carpark.