# Page Not Found

The URL `quick-start/how-to-use-a-3d-projector-with-portalgraph` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [Turn a 3D Projector into a VR Space](https://portalgraphvr.gitbook.io/portalgraph-document-en/quick-start/turn-a-3d-projector-into-a-vr-space.md)
- [Turn Your PC Screen into a VR Space](https://portalgraphvr.gitbook.io/portalgraph-document-en/quick-start/turn-your-pc-screen-into-a-vr-space.md)
- [Portalgraph App Creation Tutorial](https://portalgraphvr.gitbook.io/portalgraph-document-en/quick-start-developper/portalgraph-app-creation-tutorial.md)
- [Notes for Using Portalgraph with URP](https://portalgraphvr.gitbook.io/portalgraph-document-en/portalgraph-detail/notes-for-using-portalgraph-with-urp.md)
- [What's Portalgraph?](https://portalgraphvr.gitbook.io/portalgraph-document-en/whats-portalgraph.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://portalgraphvr.gitbook.io/portalgraph-document-en/quick-start/turn-a-3d-projector-into-a-vr-space.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.

### Option 2 — Browse the documentation index

Full index: https://portalgraphvr.gitbook.io/portalgraph-document-en/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://portalgraphvr.gitbook.io/portalgraph-document-en/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/portalgraph-document-en/quick-start/turn-a-3d-projector-into-a-vr-space.md`).

You may also use `Accept: text/markdown` header for content negotiation.