PS Ch.2--"Yes Master"

The Slide Master controls the formatting for all the slides in the presentation. The Slide Master increases productivity by letting you change one thing for all slides without you having to go through each one. It is letting you be lazy. You can change font, size, color, style, background, spacing, and alignment. Changing the Slide Master affects the appearance of all of the slides in a presentation associated with that master slide, and gives them a consistent look.