Press the buttons and on the right of your screen to modify the value of front surface tracking.
The result can be viewed in the zoom window and the display window of the bevel trajectory on the
lens section.
Press to perform a back chamfer of the assembly aid.
The chamfer is selected .
The result can be viewed in the zoom window.
Press systematically to tilt of the bevel (mounting aid).
The bevel tilt is selected .
The result can be viewed in the zoom window.