Dr. PowerPoint's List

I'm in the process of creating a list of everything you should know about PowerPoint. But only the sort of advanced stuff. Things like inserting a picture or adding text are too simple for this list. Please comment below if there is anything you want to add.

Here's what I have so far:

1. Grouping and Ungrouping objects
   
2. Moving objects with precision using Alt and CTRL.
   
3. Using the keyboard to move and duplicate objects
   
4. Transitioning slides automatically
5. Using Custom animation to animate objects
   
6. Playing music for the entire duration of the slide show or presentation

Can you think of any more?