The type of cutting moves used to cut the part from the stock.
Straight
The cutting move will be a single continuous cutting move until the part is released from the stock.
Peck
The cutting moves will be a series of pecking moves with the depth of each peck given by the Increment value and the amount of each retraction move given by the Retract value.
Alternate
The cutting moves will consist of a first cut to a depth given by the Increment value. A second cut move is made that is offset a fixed amount from the first move and to a depth equal to the Increment value. These cutting moves alternate until the last cutting move next to the part releases the part from the stock.