# Page Not Found

The URL `3-navigating-lmms/piano-roll` does not exist.

You might be looking for one of these pages:
- [Piano Roll](https://docs.lmms.io/user-manual/navigating-lmms/piano-roll.md)
- [Sidebar](https://docs.lmms.io/user-manual/navigating-lmms/sidebar.md)
- [Main Menu Bar](https://docs.lmms.io/user-manual/navigating-lmms/menu-bar.md)
- [Project Notes](https://docs.lmms.io/user-manual/navigating-lmms/project-notes.md)
- [Controller Rack](https://docs.lmms.io/user-manual/navigating-lmms/controller-rack.md)

## How to find the correct page

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

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/user-manual/navigating-lmms/piano-roll.md`)
- Use `Accept: text/markdown` header for content negotiation