When you open a PDF package, two unique areas appear:

PDF package navigation bar

Located immediately below the toolbars area. Look here for the Cover Sheet button , buttons that hide or set the orientation of the list of component documents, buttons for moving to the next or previous component document, and an Options menu with commands for viewing, editing, and using the PDF package.

List of component documents

By default, located between the PDF package navigation bar and the document pane, but can be hidden or displayed vertically, to the left of the navigation pane. Alternately, it can be located horizontally, below the PDF package navigation bar. Selecting a component file in the list opens it in the document pane.