# SessionOnly

> Glyphs generated in the Editor stay in memory until the Editor closes. The asset file is not modified and builds start with an empty atlas.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.TextCore.Text](/engine/7000.0/script-reference/unityengine/textcore/text.md)
* **Assembly:** UnityEngine.TextCoreTextEngineModule

```csharp
SessionOnly = 0
```