The World of Dereth is laid out on a coordinate system (along X and Y axes). The X-axis corresponds to East-West coordinates and the Y-axis to North-South.
Example: the town of Holtburg is located at 42.2N, 33.7E.
You can find your current coordinates at the bottom of the Map Panel or beside the Radar when the "Show Coordinates By the Radar" option is enabled.