Thanks for the reply - useful, but it continues to raise questions.<p>By looking at one of the slides, is what you&#x27;ve said obvious?  How can you tell?  From the start it&#x27;s not obvious to me that there&#x27;s a grid of slides.  It seems to me that you need to experiment to work out how it works, and it&#x27;s really not obvious.  You yourself say that you don&#x27;t know if moving sideways pops you back to the top of the next column.<p>In short, it&#x27;s all taking my attention away from the presentation, it&#x27;s making me work to figure out what&#x27;s going on, and it&#x27;s just not obvious.  Ask yourself if this is a good thing - making your audience work to figure out how the presentation works, taking them away from the content.  It&#x27;s swish, it&#x27;s fancy, ...<p>... it&#x27;s obscuring the actual content.