Stop the specified application.
Android 2.2+: restarts an application's background services only.
For other Android versions or if Use Root is selected: kills a running application and all its background services, notifications, alarms etc Note that Use Root can cause future malfunctioning of the target app if it e.g. is killed while writing data.
Tip: may be more effective if the target app is not in the foreground, try using action Go Home first.