So let's click the actual thumbnail over here in the navigator first. But if we want every slide that uses this master, even other slides that use this style, to be changed simultaneously, we'll instead edit the master. And if we want to make changes like change up the font face and the color, we could go the the text here and do that. You can see down below bulleted lists, but we don't need it for this slide. With it selected over here in the navigator, you can see on the right-hand side it's using the slide master called Title - Top. That's what we're going to explore in this movie with our Hansel and Petal orientation presentation, HP_Orientation0201 if you're catching up. That way it can affect all of the slides in your presentation, even the ones you add in the future. Each of those slide masters contains different layouts, different formatting, all of which can be modified, either in the presentation itself or more permanently by editing the slide masters.
When you select a theme for your Keynote presentation, it comes with a series of slide masters.