Even if you are not aware, every presentation you create has its own Slide Master. This Master governs the default attributes like slide background, font choices, colors, and even the positioning of the placeholders in your slide. Thus if you end up with a 50 slide presentation that uses center aligned titles that you want changed to left aligned titles in a larger font size. Then you need to make this change only once within the Slide Master, and all 50 slides update at once with your new Title formatting!
To learn more, choose your version of PowerPoint. If we do not have a tutorial for your version of PowerPoint, explore the version closest to the one you use.
Microsoft Windows
Slide Master in PowerPoint 2003
Tutorial Code: 04 07 02
Previous: 04 07 01 Using Masters
Next: 04 07 03 Title Master