> For the complete documentation index, see [llms.txt](https://docs.ipaper.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ipaper.io/flipbook-javascript-api/advanced-usage.md).
# Advanced Usage
## Multiple embedded flipbooks
If you have a page containing multiple embedded flipbooks, you can set up an API instance on each of them where you can execute commands and set up subscriptions. Below is an example of a page containing multiple flipbooks each with their own API instance.
```html
My page
```
---
# Agent Instructions
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## Querying This Documentation
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Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://docs.ipaper.io/flipbook-javascript-api/advanced-usage.md?ask=
```
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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.