# Extrude Curve
## 
Extrude Curve
The ExtrudeCrv command creates a surface by tracing the path of a curve in a straight line.
### **Steps**
1. Select a curve.
2. Specify a distance.
### Command-line options
**Output**
* Surface: Create an extrusion or a surface object.
* SubD: Create a SubD object.
**Direction**: Pick two points to define the extruding direction.
**BothSides**: Extrude towards the both sides of the input curve.
**Solid**: If the profile curve is closed and planar, both ends of the extruded object are filled with planar surfaces and joined to make a closed polysurface.
**ToBoundary**: Extrude the object to a boundary surface.
**DeleteInput**: Specify if the input object will be deleted.
**SplitAtTangents**
* Yes: Tangent points on the input curve extrude as joined edges.
* No: Tangent points on the input curve extrude as surface kinks.
**SetBasePoint**: Specify a location that serves as the first point when picking two points that et the extrusion distance.
**SubCrv**: Type subcrv to select part of a curve as input.
For more information, please refer to the [Rhino documentation](https://docs.mcneel.com/rhino/8/help/en-us/commands/extrudecrv.htm#\(null\)).
