Multimedia teaching and how to create a new document and save the lesson content?

Before using the all-in-one teaching machine to take a class, you can create a document first, because when someone uses this teaching machine in front of you and whether you have saved the class record, the window mode you enter will see the previous class content, or directly Re-enter from the computer desktop, this will create a new document by yourself, when you exit the software, a selection box will pop up asking you whether to save, when you choose yes, you can set its name , and then save it to the location you specified, if you choose No or cancel, the content of your class will not be saved;