| `sketches` | `[Sketch; 2+]` | Which sketches to loft. Must include at least 2 sketches. | Yes |
| `vDegree` | [`number(_)`](/docs/kcl-std/types/std-types-number) | Degree of the interpolation. Must be greater than zero. For example, use 2 for quadratic, or 3 for cubic interpolation in the V direction. | No |
| `bezApproximateRational` | [`bool`](/docs/kcl-std/types/std-types-bool) | Attempt to approximate rational curves (such as arcs) using a bezier. This will remove banding around interpolations between arcs and non-arcs. It may produce errors in other scenarios. Over time, this field won't be necessary. | No |
| `baseCurveIndex` | [`number(_)`](/docs/kcl-std/types/std-types-number) | This can be set to override the automatically determined topological base curve, which is usually the first section encountered. | No |
| `tolerance` | [`number(Length)`](/docs/kcl-std/types/std-types-number) | Defines the smallest distance below which two entities are considered coincident, intersecting, coplanar, or similar. For most use cases, it should not be changed from its default value of 10^-7 millimeters. | No |
| `tagStart` | [`TagDecl`](/docs/kcl-std/types/std-types-TagDecl) | A named tag for the face at the start of the loft, i.e. the original sketch. | No |
| `tagEnd` | [`TagDecl`](/docs/kcl-std/types/std-types-TagDecl) | A named tag for the face at the end of the loft. | No |
