To view the "proper paper" inside, you will need to extract the contents using one of the following tools: : WinRAR or 7-Zip are standard choices.
The file appears to be a compressed archive. Based on the filename and "proper paper" description, it likely contains a research paper, academic document, or software-related documentation.
: The Unarchiver is a popular, free option for opening RAR files.
If you're comfortable sharing more, I can help you find a specific version of this document or explain the concepts inside: The where you found this file
This Game is Not a CD or Disc. We deliver the original game to you via E-mail with a PS4-PS5 account that you can download and play for a lifetime. FAQ.