The purpose of the slide master is to allow you to make global changes to slides in a presentation. Global changes may include font style, background, placeholder positioning and so on. For example, if you want to change the size of the font for titles on all slides, you can make one change to the slide master.
To view the slide master, you need to switch to the Slide Master view. From the View menu, point to Master, and click Slide Master. Once you are in this view, you can edit the slide master the same way you would edit slides in a presentation. Generally you will edit the slide master when you need to making the following changes:
- Formatting for title, body and footer text.
- Placeholder positions for text and objects.
- Bullet styles.
- Background design and color schemes.