Great question!
If you've ever had to manage different versions of your books, be it for various formats like ebooks, paperbacks, hardcovers, or for different retailers, this feature is designed to simplify the process. "Projects" and "Versions" allow you to add custom tags to your book details, helping you efficiently organize and differentiate between different iterations of your work.
To add "Version" or "Project" information to your book, access your book details page from the Home Page or click Edit Book Details in the top left of the "Writing" tab in your open book. Here, you'll find a user-friendly interface to enter your version or project details. Type in the relevant information, and as you do so, it will be saved for future use, conveniently available in a drop-down menu.
Hope this helps!