PrintNow that you have a broad overview of the classes and files involved, let’s look at the code in more detail. The code is too long to explain every line and there are parts that should be easy to understand with the knowledge you have now and the comments included in the source code, so we will only be picking out the main points. Nevertheless, please make sure to study carefully the class definitions and how they work together, and if something is unclear, please ask on the forums.