In this example, we are going to create a .txt file which every time you open it, the file adds a date into it. This types of file we call log files.
So to do this we create a simple .txt file and we add to the top of the file with large letters .LOG
We save the file and every time you open it you will see a date added. Write something, save it and the next time you open the file it will have another date under.