Function Key 
[       ] F1 Moves the cursor to the left.
[     ] F2 Moves the cursor to the right.
[     ] F3 Moves the cursor up.
[     ] F4 Moves the cursor down.
[  △  ] F1 Goes back five items on the screen.
[  ▽  ] F2 Goes forward five items on the screen.
[RETICLE] F3 Changes the reticle illumination when pressing illumination 
key.
[LCD] F4 Changes the LCD contrast when pressing illumination key.
[ILLU] F5 Changes the LCD illumination when pressing illumination key.
[CLEAR] F5 Clears the figure.
[SELECT] F5 Opens the selection window.
•  The Function keys of each LinertecExpress function are described in “2. ACCESSING 
LINERTECEXPRESS” and at each function. 
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