Help for OffsetSrf in the section on the options for corners talks about extending curves, not surfaces. This sections appears to have been copied from Help for Offset. It needs to be revised/corrected to “surfaces”, not “curves”.
Corner
Specifies how offset corner continuity handled. These options only apply if the offset direction is to the “outside” as shown in the image.
Sharp
Curves offset to the outside of a corner will be extended to meet at sharp corners with position (G0) continuity.
Round
Curves offset to the outside of a corner will be filled with arc segments with tangent (G1) continuity.
Rhinoceros Help
