It depends. What do you want to change - the formatting or the text itself?
What version of PPT are you using? If your text is in placeholders, you can
change the formatting on the master slides and it should show on the
individual slides. If you want to change from one font to another, you can
use Format--> Replace fonts. If you want to make global changes to the text
itself, you may be able to use search and replace to do that.
Remember that we can't see what you see so you will need to describe what
you need in order for us to help.
--
Kathryn Jacobs, Microsoft MVP PowerPoint and OneNote
Author of Kathy Jacobs on PowerPoint - Available now from Holy Macro! Books
Get PowerPoint answers at
http://www.powerpointanswers.com
I believe life is meant to be lived. But:
if we live without making a difference, it makes no difference that we lived