# SPLINE Command
[GstarCAD 2018](Help%20System/GSTARCAD/2018/Index.md) → [Commands](Help%20System/GSTARCAD/2018/Commands/(Commands).md) → [S](Help%20System/GSTARCAD/2018/Commands/S/(S).md)
The SPLINE command is used to create smooth curves through or near a group of fit points.
**Command Access:**
> **Ribbon:** Home \> Draw \> Spline
>
> **Menu:** Draw \> Spline
>
> **Command:** SPLINE
Command Prompts:
> Specify first point or \[Object\]:
> Specify next point:
> Specify next point or \[Close/Fit tolerance\] \<start tangent\>:
> ......
> Specify start tangent:
> Specify end tangent:
Function Description:
The SPLINE is called non-uniform rational B-spline (NURBS), for simplicity, called splines.
It is defined by fit points. By default, the fit points are coinciding with spline.
Relative Glossary:
**First point:**
Specify the first point of a spline.
**Object:**
Convert 2D or 3D polylines that fitted by quadric splines or cubic splines to equivalent splines. Users could save or quit original polylines by setting the DELOBJ system variable.
**Next point:**
Prompt to create other splines, press ENTER to end the command prompts.
**Close:**
Close the spline by defining the last point coincides with the first point. By default, the closed spline is periodicity and keeps curvature continuously along the entire ring.
**Fit tolerance:**
Specify the offset of fit points of a spline. If the fit tolerance is 0, the created spline goes through all fit points. The fit tolerance is applied on all fit points (except the start point and the end point).
**Start tangent:**
Specify the tangent condition at the start point of a spline 
**End tangent:**
Specify the tangent condition at the end point of a spline.
## Other versions with matching text
[GstarCAD 2016](../../../2016/Commands/S/SPLINE%20Command--1e2f44a9b4d7.md) · [GstarCAD 2017](../../../2017/Commands/S/SPLINE%20Command--1e2f44a9b4d7.md) · [GstarCAD 2019](../../../2019/Commands/S/SPLINE%20Command--1e2f44a9b4d7.md) · [GstarCAD 2020](Help%20System/GSTARCAD/2020/Commands/S/SPLINE%20Command--1e2f44a9b4d7.md) · [GstarCAD 2021](../../../2021/Commands/S/SPLINE%20Command--1e2f44a9b4d7.md)