What is new in PowerPoint 2013-9 - Comments

Finally on the Insert tab a button to add Comments has been added.

When you click on it a task pane will appear on your right and a comment bubble will be added to the slide.
If the comment is for the whole slide it will appear in the top left corner.
If the comment has been added to an object it will appear next to that object.

You can move the bubble anywhere on your slide by dragging it in place.

Other users can post a reply if they want. The author can delete the comment if he wants and move from comment to comment using the next and previous buttons.

To see the comments task pane you can also click the Comments button on the taskbar.

You can still add comments using the Review tab and the New comment button.