In the context of your query, "proper paper" likely refers to instructions (like MLA or APA) rather than the game update itself. If you are trying to write a paper about this file or naming conventions:
: The .rar extension indicates a compressed archive that requires software like WinRAR or 7-Zip to open and extract. "Proper Paper" Meaning Hero.and.Daughter.Update.23.12.2019.rar
: Professional "proper paper" naming often requires a consistent format, such as Lastname_Assignment_Date . Hero & Daughter (Video Game) - TV Tropes In the context of your query, "proper paper"