The project instructions describe how to package your submission, and list the contents of your README.txt file. In it they say you need to include a list of the files you submit, their locations in the directory structure, and a description of their purpose.
Do they mean we are to list each and every source, class and doc file, or do they really mean list files such as your Design Decision file, your client.jar file, etc, and then merely refer to all the source files, class files, etc., as a whole by naming the directory they are in?