Olympia: The Age of Gods PBEM (Oct 4 2000)
Usage: USE 3038 <gate> [key] Time to learn: 28 days. Time to use: 1 day. Required aura: variable
Gates were long thought to be one way portals through space. Most mages believed that returning to the starting location required a second gate or a conventional journey.
However, it is possible to jump back to a gate from the gate's destination. Reversing the direction of teleportation is difficult, so the jump requires twice as much aura as a forward jump.
As with a conventional jump, the mage must know the gate's entity number as well as the key, if necessary.