# GH_ExpandMode enum

Namespace: [Grasshopper.Kernel.Data](https://developer.rhino3d.com/api/gh1/namespace/grasshopper.kernel.data.md) · Assembly: [Grasshopper](https://developer.rhino3d.com/api/gh1/assembly/grasshopper.md)

```cs
public enum GH_ExpandMode
```

Enumerates the possible expansion modes for structure paths.

## Values

| Name | Value | Description |
| --- | --- | --- |
| None | 0 | Indicates no expansion should take place. |
| SimpleReplace | 1 | Paths are expanded and collisions are erased. |
| SimpleAppend | 2 | Paths are expanded and merged with colliding paths. |
| Recursive | 3 | Before a path is expanded, any collision is expanded first. |