Each new slide you create uses one of the Keynote master slides (templates). Each master slide has certain elements on it, such as a title, bulleted text, and media placeholders (containing photos). When you create a new Keynote document, the first slide automatically uses the Title & Subtitle master slide.
After you create a new slide, you customize it by adding your own text, images, shapes, tables and charts, and more.
See the following topics for detailed information: