Be cautious when downloading .rar files from unofficial sources, as they may contain malicious software. AMSTERDAM XP11/12 - simMarket
In some unofficial file-sharing contexts, "paper" or "key" may refer to a password required to extract the .rar file. amsterdam-xp12.rar
If you downloaded this from a specific forum or site, the password is often the URL of the website where you found the link. Be cautious when downloading