| Curve | C | Curve to smooth | Curve |
| Steps | N | Number of recursive smoothing steps | Integer |
| Start Type | S | Determines how the start of the curve is preserved
0 = Preserve start point only
1 = Preserve first two points
2 = Preserve first three points | Integer |
| End Type | E | Determines how the end of the curve is preserved
0 = Preserve end point only
1 = Preserve last two points
2 = Preserve last three points | Integer |
| Deviation Tolerance | d | Tolerance distance the smooth curve is allowed to deviate from the curve to smooth | Number |
| Angle Tolerance | a | Tolerance angle in degrees for kink smoothing | Number |