When you power on your smartpen, it starts up in a Home state. In this state, the smartpen screen shows the current time and battery status. From the Home state, you can capture notes, but no apps are running.
At any time, you can return your smartpen to the Home state by tapping on a Home button. This quits all currently-running apps and returns the smartpen to the Home screen. Livescribe recommends using the Home button whenever you want to quit and app and start another.
Your smartpen quits all currently-running apps. The smartpen screen shows the Home state: current time and battery level.