Sekhe is a fifth dimension in neither space nor time, but a third kind of dimension that is somewhat spacelike. This dimension is what embodies the separation between realms, and has the unique property of dilating space the farther away from a given realm you are. By extruding oneself sekhally (that is, along the sekhal dimension), one can exponentially improve the efficiency of spatial travel. This is what allows the inhabitants of Siikatal to travel not only between realms, but also from place to place within the realms, and allows for travel across thousands of light-years to be completed in mere days.