# Page Not Found

The URL `introduction/upgrade.html` does not exist.

You might be looking for one of these pages:
- [Release info](https://dev.ishare.eu/introduction/upgrade-to-ishare-2.0.md)
- [UI Guidelines](https://dev.ishare.eu/introduction/ui-guidelines.md)
- [Conformance test tool](https://dev.ishare.eu/introduction/conformance-test-tool.md)
- [Help & support](https://dev.ishare.eu/introduction/help-and-support.md)
- [Getting started](https://dev.ishare.eu/introduction/getting-started.md)

## How to find the correct page

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

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/introduction/upgrade-to-ishare-2.0.md`)
- Use `Accept: text/markdown` header for content negotiation