With electronic bookmarks, you can group these links together in hierarchies, specify the exact text labels to use, and set your document so that the bookmarks are displayed or hidden when a document is first opened.
If they’re well laid out, a set of bookmarks will help the user understand the basic structure of long documents. Moreover, including bookmarks can help in encouraging your users to view documents onscreen instead of wasting paper by printing them.
The most common use of bookmarks—linking to different pages within a PDF—is just about the simplest way to make a document more user-friendly.
In the navigation tabs displayed along the left side of the Nitro Pro window, click the Bookmark tab. The Bookmarks pane opens.
In the File menu, click Document Properties. The Document Properties dialog opens.