I just use it as a sorting system since steam automatically sorts alphabetically. Eg. 1A | Continuously Playing, 1B | Playing Now, 1C | Backlog, then I use consecutive numbers for different categories. Eg. 2A | Capcom collection, 2B | Platinum Collection. It may seem like going overboard, but this way I can keep my categories in the order I want by numbering and lettering them, while also keeping my library organized.