Round Corner

The cutter rolls around the corner. If the contour offset is > 0, the result will be a round corner.
Illustration

Sharp Corner

The cutter rolls around the corner to produce a sharp corner.
Illustration

Sharp Motion

The cutter moves in straight lines to produce a sharp corner.
Illustration

All Round

If the contour offset is > 0, all corners (internal and external) will be rounded. In this case a Minimum Radius must be defined.
Illustration