Aon Tia

Most of them were simple inert markings, rather than runes with an arcane purpose. Others, however, obviously held energy. Throughout the city stood large metal plates carved with Aon Tia, and occasionally an Elantrian would approach and place his or her hand in the center of the character. The Elantrian's body would flash, and then disappear in a circular burst of light, his body instantly transported to another section of the city.

Elantris Chapter 19