Like most other programming languages, Just BASIC allows you to interact with your computer's file system. You can retrieve information about your computer's drives, and you can open files, read from them, write to them, and close them. As such, you can create reports, documents, and log files, so that's what you'll focus on in this lesson. The application for lesson is the Tic Tac Toe game. It's a project that will exercise many of the programming muscles that you've developed throughout the course so far.