History
To see a full log of all changes, click on the History button. When viewing an overview of slides you will see a log of what was changed and on which slide:

When viewing a single slide you will see a log of what was changed on that slide:

To see a full log of all changes, click on the History button. When viewing an overview of slides you will see a log of what was changed and on which slide:
When viewing a single slide you will see a log of what was changed on that slide: