Akin to a rotary dial, each Stargate has nine prominent points (chevrons) spaced equally around its circumference, which are used to determine the address being dialed. On the inner ring is a set of unique glyphs; on Milky Way and Pegasus gates, the glyphs represent constellations, while the meaning of the glyphs on Destiny-style gates is unknown. The number of glyphs is dependent on the network to which the gate belongs; Milky Way gates feature 39 glyphs, while Pegasus and Destiny gates have 36. Of these symbols, 38 and 35 for Milky Way and Pegasus gates, respectively, can be used to select a destination. One symbol represents your own location, the so-called point of origin. The first seven of a Stargate's chevrons and glyphs are "maps" used to isolate the location of another gate and establish a connection. Chevrons one-through-six are used to designate points in space (i.e. star clusters, constellations and planets) and form three-dimensional coordinates for the destination, while the seventh chevron is coded to the Stargate's current position, to provide a point of origin for the "Einstein–Rosen bridge". When sufficient power is available, the eighth chevron can be used to connect to another galaxy, effectively acting as an "area code" connecting to an entirely different network of Stargates. The ninth chevron enables a connection to a specific Stargate with its own unique nine-symbol address, regardless of distance or location.