In various versions of PowerPoint, including PowerPoint 2016 for Mac, what’s the one thing that has not changed? Yes, it’s PowerPoint’s tri-paned interface! So, why is the interface called tri-paned? Are there three distinct regions within the PowerPoint 2016 for Mac interface? Yes, the Slide Area is one of three principal regions in PowerPoint 2016; the other two being the Slides Pane and the Notes Pane.