# Case Labels

{% hint style="info" %}
Case labels are VIs with a **c\_** prefix in their filename, identifying them as a Case Label.
{% endhint %}

A Case Label is a string constant that is wrapped in a VI, that is a member of a Worker and corresponds to the name of a Worker's MHL case. Case Labels are created automatically by the [Create MHL Case tool](/workers-tools/quickdrop-shortcuts/create-mhl-case-tool-ctrl+9.md) when a MHL case is created that is not associated with a Local API Request. An example would be when a MHL case is created to receive a Public Response message from a subWorker. Case Labels are added automatically to a Worker's dedicated **Case Label** folder, as shown in the image below.

<figure><img src="/files/KJChyZ9mj7qQfNL2lSaL" alt=""><figcaption><p>Case Label in a Workers project</p></figcaption></figure>

<figure><img src="/files/RMPMlW4hMlb7DLK5ZuqH" alt=""><figcaption><p>Case Label used in a Set Initialization Data VI, used to register a Public Response message with a subWorker.</p></figcaption></figure>


---

# 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.workersforlabview.io/worker-apis/case-labels.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.