I wonder why their is no popup function in the presentation template. For me the coure presentation template is a very good choice for explaining technical issues. But sometimes it is helpful to give the learners the opportunity to get deeper into the content. For example, you have a wire diagram and want to know more about the individual parts. When you click on a part a text, a picture or a video is apearing and you can get more information.
It is not just linear but 3-dimentional.