A Stargate address consists of two distinct parts: the destination and the starting location. The first six chevrons mark a three-dimensional area of space as the target. The last chevron is the point of origin, identifying where the Stargate is dialling from. Seven chevrons are used to dial within a galaxy, while the eighth and ninth are required for greater distances. The point of origin is always the last chevron, apart from the nine-chevron address, while any between it and the first six are modifiers that change how the system interprets the coordinates given. Assuming the dialling gate has enough power and neither is obstructed in any way, the wormhole will then form, allowing passage.