# Top Bar

LightAct's Top Bar is populated with a lot of useful information regarding your machines' and projects' state.

In this chapter, we will go over a few of the options it offers.

<figure><img src="/files/hF0D4T2LMszbi8WzwgVC" alt=""><figcaption></figcaption></figure>

## Master Fade

## Master Volume

<figure><img src="/files/Hre2PSLqfVgLyNYnUFmS" alt=""><figcaption></figcaption></figure>

## CTRL

*Master Control*, or *CTRL*, is a powerful feature designed .

### Lock UI

Once activated, *Lock UI* locks all program functionalities and access until the correct password is entered.

To enable this feature, click on the **CTRL** button and choose **Lock UI**.

<figure><img src="/files/dciygAWgFOzE5WVfZ1QC" alt=""><figcaption></figcaption></figure>

Upon clicking, a *Lock the UI pop-up* will appear, populated with the default lock password chosen in the *Preferences Window*, under the *General* tab.

Once you click **Lock** button, the UI will be locked.

<figure><img src="/files/38OPIY6s5AdICI4hK9RN" alt=""><figcaption></figcaption></figure>

To unlock it, you could either type the correct password, as entered in the *Lock the UI pop-up*, or you can press **LeftCtrl + LeftShift + L***.*

This security measure ensures that unauthorized users cannot interact with or make any changes to the program's settings, configurations, or content until the correct password is provided.

{% hint style="info" %}
**Good to know:** Default password is **LightAct**.
{% endhint %}

### Lock Cursor to App

When enabled, **Lock cursor to app** keeps the cursor confined to the application window, making sure it does not exceed the boundaries of LightAct's GUI.

<figure><img src="/files/UBs3Ep2q6yOa6qdHtDSK" alt=""><figcaption></figcaption></figure>


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.lightact.com/quick-start/user-interface/top-bar.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.