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 believe Benjamin is using the morph transition between slides. You are supposed to get 4 vertical text boxes with numbers 0-9 and move them up/down in a duplicated slide. Then apply the morph transition between the slides and the digits are supposed to scroll to display the new number. The thing that is the issue here is that the text boxes change their horizontal positions which does not look good. The same happens to me, but I figured out that if you change some property of each text box, they don't switch positions. For example each one of my boxes has a slightly diffrent colour. I suppose you could just add some character to the hidden part of each text box.