Number of program points
Grooving tools have 2 cutting edges, left and right.
This parameter defines the number of points to be driven (1 or 2) for the operation.
If the users selects 1 point, he will have to answer which points he wants (right or left)
if the user select 2 points, TopSolid'Cam will use in automatic the 2 cutting edges according to the faces to machine.
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