# Page Not Found

The URL `oop/facade` does not exist.

You might be looking for one of these pages:
- [Introduce](https://hyoguoo.gitbook.io/docs/oop/introduce.md)
- [SOLID](https://hyoguoo.gitbook.io/docs/oop/solid.md)
- [Type(타입)](https://hyoguoo.gitbook.io/docs/oop/type.md)
- [Abstract(추상화)](https://hyoguoo.gitbook.io/docs/oop/abstract.md)
- [Object-Oriented Programming](https://hyoguoo.gitbook.io/docs/oop.md)

## How to find the correct page

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

## Tips for requesting documentation

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