# Page Not Found

The URL `extending/customize-the-backoffice` does not exist.

You might be looking for one of these pages:
- [Backoffice Search](https://docs.umbraco.com/umbraco-cms/extending/backoffice-search.md)
- [Creating a Custom Seed Key Provider](https://docs.umbraco.com/umbraco-cms/extending/creating-custom-seed-key-provider.md)
- [Health Check](https://docs.umbraco.com/umbraco-cms/extending/health-check.md)
- [Creating a Custom Database Table](https://docs.umbraco.com/umbraco-cms/extending/database.md)
- [Overview](https://docs.umbraco.com/umbraco-cms/extending/build-on-umbraco-functionality.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://docs.umbraco.com/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://docs.umbraco.com/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/umbraco-cms/extending/backoffice-search.md`)
- Use `Accept: text/markdown` header for content negotiation