Joliet is like a special way of organizing and naming files on a computer or CD/DVD. It helps the computer understand different types of letters and symbols, like ones from different languages, so it can show them to you correctly. It's like when you have blocks with different shapes and colors, and you put them in the right slots to make a picture. Joliet helps the computer put the right files in their proper slots so you can see them nicely, even if they have some different shapes or colors (like letters from other languages) that the computer might not know.