# Walkthrough

## Open the app

Open the app at [fogo.howtofirebase.com](https://fogo.howtofirebase.com/).

## Open DevTools

[Sourcemaps are currently broken in Chrome](https://github.com/webpack/webpack/issues/3165) for Fogo as of July 2018.

This is best done in Firefox.

Right-click `inspect element` and select the `Debugger` tab. Then click `command + P` to search for and open two files:

* `observers/images.observer.js`,
* and `queries/images.query.js`.

![observers/images.observer.js](https://goo.gl/DeEsZT)

![queries/images.query.js](https://goo.gl/pMa7ad)

## Video

{% embed url="<https://youtu.be/eOXlUYruPjw>" %}


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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://www.fullstackfirebase.com/cloud-firestore/walkthrough.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.