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.
Based on your answers, I don't think there is really a great way to do this in PowerPoint. As far as I know, there isn't a way to link two text boxes so they always have the same content unless they are on a master slide. You might look into that, but that doesn't seem to really be what you want either. There are options with macros, but they are probably much too complicated for your problem.