# FileObjWriteOptions.PolylineExportType enum

Namespace: [Rhino.FileIO](https://developer.rhino3d.com/api/rhinocommon/namespace/rhino.fileio.md) · Assembly: [RhinoCommon](https://developer.rhino3d.com/api/rhinocommon/assembly/rhinocommon.md) · Since v8.0

```cs
public enum FileObjWriteOptions.PolylineExportType
```

Determines how polylines will be written to the file

## Values

| Name | Value | Description |
| --- | --- | --- |
| Bspline | 0 | Polyline is exported as a degree 1 Bspline (this has been the historical method) |
| Single | 1 | Polyline is exported as a single OBJ "l" object with multiple indices to "v" objects |
| Multiple | 2 | Polyline is exported as multiple OBJ "l" objects, each with 2 indices to "v" objects |