# ... customize the header

In Data One, you can customize a **header** that will appear at the top of all sections.

<figure><img src="/files/xmt0e6y2RWl4tRn8kUNF" alt=""><figcaption></figcaption></figure>

Both the text that will appear in the header, and the color of the text and background can be customized.

Let's see how to do it.&#x20;

First, head over to the **Setup** → **WUI Settings** section. Here, you will find a **Show** toggle that you can use to make the header visible or invisible.

When the **Show** toggle is set to ON, the following options will appear:

* A **Text** section with three buttons:
  * **Environment name**: select this option if you want to see the name of your environment in the header. Note that you cannot change the name of your environment from this section.
  * **Company Name**: select this option if you want to see the name of your company in the header. Note that you cannot change the name of your company profile from this section.
  * **Custom**: select this option if you want a custom name for your header, which you have to enter in the field.
* A **Colors** section where you can choose:
  * The **Text color**
  * The **Background color**

{% hint style="info" %}
In the Text color and Background color edit fields, use either the #HEX format (e.g. #00000, #FF000) or the HTML color name (e.g. black, red).
{% endhint %}

When you have defined the style of your header click **Save** or select **Reset** to undo.


---

# 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.primeur.com/data-mover-1.21/how-to.../...-customize-the-header.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.