Long presses on application icons in the system tray allow you to move them to the desktop. Long presses on widgets allow you to move or adjust the size. Long touches on the old desktop clock allowed you to remove it. Generally, the long press is used to display a contextual menu when the app supports it. A variation is the long-press drag. This is a long press that allows you to move objects that would ordinarily be harder to move, such as rearranging icons on the Home screen. Scrolls are swipes or flings with an up and down motion rather than side to side. Drag from the top or bottom edge of the screen into the middle of the screen to open menus in many programs. Pull downward (drag or fling) from the top area of the screen to the middle of the screen to refresh the contents in apps such as Mail. A common arrangement is a Home button in the center with an Overview and Back button on either side. The arrangement might be slightly different based on your device, but the general idea is standardized on Android now.
