A portable handheld computing device has a processor and a touch-sensitive display. The display includes a touch-sensitive area superimposed on a viewing area, whereby the touch-sensitive area extends beyond the viewing area to form a border outside of the viewing area but within the touch-sensitive...http://www.google.com/patents/US5910802?utm_source=gb-gplus-sharePatent US5910802 - Operating system for handheld computing device having taskbar auto hide
