Again, changing master slides in your presentation file does not change any of the master slides in the theme files. It's important to understand that modifying a master slide changes it only for the presentation file you are currently working in it doesn't modify the copy of the master slide that is in the theme file, and your changes also don't modify master slides of the same name in other themes.Ī big change in Keynote 2 is that a single presentation file can contain more than one theme, including all of the master slides within each theme ( Figure 3.5). You'll do this by making changes to one or more of the master slides in your presentation. But each presentation is different, and sometimes you want to change one or more of the slide masters to better fit the content of your presentation. Most of the time, you'll probably be happy with the styles and layouts in the master slides from the theme that you are using. Keynote 2 for Mac OS X: Visual QuickStart Guide