# Engine Display Window

In Reality Hub terminology, Engine Display Window refers to the separate **scene-preview window** that activated on the **Engine Host**.

<div align="left"><figure><img src="https://3158411086-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F4U3Lg7WjDb4Pjs4QC0E2%2Fuploads%2FZcg0IddZzsxBCpAS68UA%2Fimage.png?alt=media&#x26;token=37dddc8d-972c-4891-a813-09b5de736da8" alt="" width="422"><figcaption><p>Launch Parameters</p></figcaption></figure></div>

To utilize it, you have to disable **renderoffscreen** option in the Launch Parameter section, as illustrated above.&#x20;

{% hint style="info" %}
This window is sometimes called the Game Preview Standalone or the Render Preview Output.
{% endhint %}

<div align="left"><figure><img src="https://content.gitbook.com/content/4U3Lg7WjDb4Pjs4QC0E2/blobs/kCbCeq15TeFoGDP90UPQ/image.png" alt=""><figcaption><p><em>Image courtesy of Virtual Line Studios &#x26; ASK Co.</em></p></figcaption></figure></div>

<div align="left"><figure><img src="https://content.gitbook.com/content/4U3Lg7WjDb4Pjs4QC0E2/blobs/BAJBJrnFeGBkpKtJt8kq/EngineDisplayWindow.png" alt=""><figcaption><p>Unreal Engine Display Window</p></figcaption></figure></div>

{% hint style="info" %}
To disable the full screen, click F11 on your keyboard.
{% endhint %}

{% hint style="warning" %}
Closing **the** Engine Display Window **stops your Engine**.
{% endhint %}

{% hint style="warning" %}
Minimizing the Reality Engine display window might affect your performance. You can **leave it aside** or **keep it in the background**.
{% endhint %}

Instead of going back and forth to the Engine Display Window to check your scene, you can utilize the **Advanced Preview Monitor** feature without leaving the Reality Hub interface.&#x20;

* For Reality Engine, see [Advanced Preview Monitor](https://zerodensitydocumentation.gitbook.io/docs/reality-5.3-sp2/reality-5.3-sp2/user-guide/nodegraph-actions/nodegraph/advanced-preview-monitor)&#x20;
* For Unreal Engine, please visit [Advanced Preview Monitor for Unreal Engine](https://zerodensitydocumentation.gitbook.io/docs/reality-5.3-sp2/reality-5.3-sp2/user-guide/controlling-unreal-engine-5.3/ustate/apm-for-unreal-engine-5.3)&#x20;