If you need to correct some of the ring locations, after hitting the manual digitization line you will be able to move the cursor to the desired points on the screen with the arrow keys.
If a point is incorrectly marked, highlight it and press the del key.
To enter a point, put the cursor on the appropriate place on the ring and press the space bar-the unit will automatically locate the ring. If it does not properly locate the desired point, put the cursor on the correct point and hit the insert key.
