# Page Not Found

The URL `v2-changes/important-differences` does not exist.

You might be looking for one of these pages:
- [Extensions reference](https://gitbook.com/docs/api-references/extensions-reference.md)
- [Site redirects](https://gitbook.com/docs/docs-site/site-redirects.md)
- [Structuring your API reference](https://gitbook.com/docs/api-references/guides/structuring-your-api-reference.md)
- [Insert API reference in your docs](https://gitbook.com/docs/api-references/openapi/insert-api-reference-in-your-docs.md)
- [Migrate to GitBook](https://gitbook.com/docs/getting-started/import.md)

## How to find the correct page

1. **Ask a question**: /docs/sitemap.md?ask=<question> - Complete answer with sources
2. **Browse the full index**: [/docs/sitemap.md](https://gitbook.com/docs/sitemap.md) - Complete documentation index
3. **View the full content**: [/docs/llms-full.txt](https://gitbook.com/docs/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/docs/api-references/extensions-reference.md`)
- Use `Accept: text/markdown` header for content negotiation