I see two new items when I right-click on a Heading in the Navigator: Outline Folding and Outline Tracking. I know what Outline Folding does (though the description in the Help does not exactly match what I see in the program), but what is Outline Tracking? It has three choices: Default, Focus, and Off. I have been unable to find any information about this item or what it is supposed to do. Can someone tell me?