When this is set to Yes, SURFCAM will save the raw Z-level slices in Z Rough and Z Finish. SURFCAM will save the slices on the first available layer starting at layer 255. If layer 255 is not available, it will try 254, and so on, until an available layer is found. It will name that layer Z slices. The slices will be polylines.
If there are no layers available, the slices will not be saved.