A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
I am having the same problem. To answer your first question when he means leaving the slide, as in going to the next slide and not leaving the the application. So when on slide 2 and you highlight a term and go to the next slide number (3) and then going back to slide 2 the highlighted word is gone.
I just need to learn how to save highlights and pen marks on the slide because they seem to disappear when I go to few the next slide in the same PowerPoint.