# Page Not Found

The URL `developer-guide/introduction` does not exist.

You might be looking for one of these pages:
- [Developer Guide](https://docs.chamilo.org/developer-guide/developer-guide.md)
- [Contributing](https://docs.chamilo.org/developer-guide/developer-guide/contributing.md)
- [Frontend](https://docs.chamilo.org/developer-guide/developer-guide/frontend.md)
- [Authentication](https://docs.chamilo.org/developer-guide/developer-guide/api/authentication.md)
- [Theming](https://docs.chamilo.org/developer-guide/developer-guide/theming.md)

## How to find the correct page

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

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/developer-guide/developer-guide.md`)
- Use `Accept: text/markdown` header for content negotiation