# LayerTable.LayerType enum

Namespace: [Rhino.DocObjects.Tables](https://developer.rhino3d.com/api/rhinocommon/namespace/rhino.docobjects.tables.md) · Assembly: [RhinoCommon](https://developer.rhino3d.com/api/rhinocommon/assembly/rhinocommon.md) · Since v8.6

```cs
public enum LayerTable.LayerType
```

Layer types created by [LayerTable.CreateLayer(Layer, LayerTable.LayerType, uint, uint)](https://developer.rhino3d.com/api/rhinocommon/type/rhino.docobjects.tables.layertable/createlayer.md).

## Values

| Name | Value | Description |
| --- | --- | --- |
| NormalLayer | 0 | Normal ordinary layer. |
| LinkedInstanceDefinitionParentLayer | 2 | Linked instance definition "filename.3dm" parent layer of the instance definition's layer tree. |
| WorkSessionParentLayer | 4 | Worksession reference model "filename.3dm" parent layer of the reference model's layer tree. |