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 Tune/Select Knob
 Touch Screen

Joystick

 In a Joystick system, the user scrolls through the list or along the map by moving
the joystick to the left, right, up, down, or diagonally

 He/she makes a selection by pressing the center of the joystick
 This type of system also has hard keys along the left and right side of the screen
that allow the user to bring up specific menus

Tune/Select Knob

 In a Tune/Select Knob system, the user scrolls through a list or along the map by
turning the tune/select knob
 He/she makes a selection by pressing the center of the tune/select knob
 This type of system has hard keys along the left side of the screen that allow the
user to bring up specific menus
 There are also soft keys on the right side of the screen
 The functionality for these keys will change depending on the screen the user is on

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