# Default

> The element's visibility is not specified and is determined by the UI Builder. Unity hides elements with namespaces that start with "Unity", "UnityEngine", and "UnityEditor".

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.UIElements](/engine/6000.5/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
Default = 0
```