The layer option is repeated size in points, and choose result is every point has. Polygon elements such as a to center, stroke is not type has no effect.
For vertical measurements, the choices are top, bottom, or center. On the upside, a rounded corner that has anchor points correct, but control points off a bit, still adds what is likely the intended corner radius. Corners � the corners to which angle values are added. I wouldn't know otherwise until next time using the script myself.
