The Outline pane displays the available content you are viewing.
You can navigate to a document in the outline by clicking it with the mouse. You can use the Tab key to navigate to documents in the outline and various links and graphic elements in each pane. You can also use the arrow keys to navigate the outline. Press the left arrow key to expand or the right arrow key to collapse the selected section. The left and right arrow keys do not affect topics. Use the up arrow or down arrow keys to navigate up or down the outline.
Selecting a topic and pressing Enter or double-clicking on a topic launches it in the default playback mode. The default playback mode is initially set by your content provider; however, you can change it in Preferences.