Exemplary methods and media relate to controlled movement of a viewing window across a graphical user-interface using an orientation-tracked display-device. The viewing window in an exemplary method may move in accordance with detected change in the physical orientation of the display-device. When the physical orientation of the display-device is sufficiently motionless, the position of the viewing window may be held fixed with respect to the graphical user-interface and a stability region may be established in the viewing window. The viewing window may continue to remain still as long as the physical orientation of the display-device remains within a range of orientations represented by the stability region. Then, the viewing window may begin moving again with respect to the graphical user-interface when the orientation moves outside of the range defined by the stability region.