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Chapter 4 Basic operations
4.3 Inserting the scope
Holding the control unit and scope
1 In general, the [ANGLE] joystick of the control unit is manipulated
with the thumb of the hand holding the grip of the control unit.
2 Other buttons are also to be manipulated with the fingers of the
hand holding the grip of the control unit.
3 Hold the insertion tube with the other hand to which the control unit
is being held.