# Page Not Found

The URL `about:/en/guides/workflow/key-concepts` does not exist.

You might be looking for one of these pages:
- [Key Concepts](https://docs.compan-ai.org/key-concepts.md)
- [End](https://docs.compan-ai.org/node-description/end.md)
- [Agent](https://docs.compan-ai.org/node-description/agent.md)
- [Structured Outputs](https://docs.compan-ai.org/structured-outputs.md)
- [Additional Features](https://docs.compan-ai.org/additional-features.md)

## How to find the correct page

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

## Tips for requesting documentation

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