Samsung SCH-I515MSAVZW - Manual (Page 10)

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Just above the Navigation buttons, notice the Favorites tray:
The app icons you keep in the tray remain visible on every Home
screen.
The All Apps icon in the center is permanent. Touch it to
see all your apps and widgets.
The middle of your Home screen can hold app and widget icons, plus folders.
S To open an app, folder, or widget, touch its icon.
S To see additional Home screens, swipe your finger quickly left or right.