# Editor

> Application is running in the Unity Editor.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine](/engine/7000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
Editor = 5
```

### Remarks

[Application.installMode](/engine/7000.0/script-reference/unityengine/application/installmode.md) returns this value in the Unity Editor, in Edit and Play modes. Players never return it, so use it to guard Editor-only code.