# GH_ParamAccess enum

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

```cs
public enum GH_ParamAccess
```

Enumerates the types of access that parameters support.

## Values

| Name | Value | Description |
| --- | --- | --- |
| item | 0 | Every data item is to be treated individually. |
| list | 1 | All data branches will be treated at the same time. |
| tree | 2 | The entire data structure will be treated at once. |