The Keys to the WayPoints
Indices are the keys to the WayHall. Each aligns with a WayHall and can be found on the world that the WayPoint is in the L3 LaGrange Point of. They are relatively small, only a quarter of a meter in diameter, considering the fact that the Rifts they lurk in are detectable only to the naked eye.
Dunno where they come from. Dunno how they work. Dunno what they're made of. They're basically the most important thing in Ethnis.