# Topics

You can use this option with your [single opt-in subscription form](/web-push/integration-script/subscription-form.md) or  [double opt-in subscription form](/web-push/integration-script/subscription-form.md). 

If you choose a single opt-in form, the subscriber can configure or change preferred topics only in the bell widget

<figure><img src="/files/Nvzr7t2IRB1d7ZNBAT9i" alt=""><figcaption></figcaption></figure>

In case of a double opt-in subscription form, you can also ask users about their preferred topics as they agree to receive notifications via the form itself. See [Subscription form creator topics](/web-push/integration-script/subscription-form/subscription-form-creator/topics.md) for more information.&#x20;

Every subscriber who chooses their preferred topics will receive a label (or labels) *sys.topic*. See how to configure this option under [Topics](/web-push/integration-script/subscription-form/subscription-form-creator/topics.md).


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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.pushpushgo.company/web-push/integration-script/bell-widget/topics.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.