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2.2    Names and Functions of Control Panel Ke
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35 
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36 
    [VRM 1 / 2 ] (Variable Range Marker 1 / 2) key 
Use this key to set the display of VRM1 / VRM2 to On / Off and acquire the operation right. 
 
 
37 
  [ENT] (Enter) key 
Use this key to confirm menu selection and input of numeric values. 
This key is equivalent to the clicking of the left button of the track ball. 
 
 
38 
  [CLR / INFO] (Clear / information) key 
Use this key to cancel menu selection or numeric value input. 
This key is equivalent to the clicking of the right button of the track ball.