# Flow Along Curve
### 
Flow Along Curve
The **Flow** command re-aligns objects from a base curve to a target curve, making it useful for mapping flat or straight shapes to curved ones.
Command-line options:
* **TargetSurface**: Uses a surface to orient objects along a target curve based on surface normals.
* **Copy**: Creates a copy of the objects during the flow operation.
* **Rigid**: Moves objects along the target curve without deforming them.
* **RigidGroups**: Applies the Rigid option to groups when enabled.
* **Line**: Defines a line as the base curve for the flow operation.
* **Local**: Defines a "tube" of influence around the input curve, affecting only objects within this tube.
* **Stretch**: Stretches or compresses objects along the target curve to match their relationship to the base curve.
* **PreserveStructure**: Maintains the knot structure of curves and surfaces during deformation.
* **Roadlike**: Uses frames to calculate 3D rotation when objects are mapped to a 3D target curve.
These options allow for versatile transformations and precise control when aligning objects to curves.
For more information, please refer to the [Rhino documentation](https://docs.mcneel.com/rhino/8/help/en-us/commands/flow.htm#\(null\)).
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