Click Turning
Operation 
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Now select the profile as shown in the video sequence by holding down the left-hand mouse button and dragging the window to define the opposite corners. Click again to fix the window's position.
Move your mouse over the square to start the video.
Right click to complete the profile selection and then right click again to accept the default start point on the profile.
For the cycle start point, pick the white point just clear of the front chamfer.
For the outer billet, select the white profile.