# AlwaysOn

> Always maintain an up-to-date sprite atlas cache for Sprite with packing tag (legacy).

## Definition

* **Type:** Field
* **Namespace:** [UnityEditor](/engine/6000.3/script-reference/unityeditor.md)
* **Assembly:** UnityEditor

> **Warning:**
>
> **Deprecated.** Sprite Packing Tags are deprecated. Please use Sprite Atlas asset.

```csharp
AlwaysOn = 2
```

### Remarks

Use this value to set the sprite atlas cache to update when you play the Scene or build the Player.

Note that the [SpriteAtlas](/engine/6000.3/script-reference/unityengine/u2d/spriteatlas.md) is not packed.