The Oracle Help table of contents displays an organized, hierarchical list of topics. Topics are displayed in the topic window on the right side by double-clicking a topic title in the table of contents. The table of contents includes:
Automatic synchronization of the table of contents and the topic window. (As you navigate through topics in the topic window on the right, the current topic title is highlighted in the table of contents on the left.)
Unlimited levels of hierarchy
Printable (The hierarchical list of topics in the table of contents can be printed.)
You can import external tables of contents and then merge them together using Oracle Help remote views. When you merge views you can have the files display as separate books, as one merged table of contents, or on separate tabs.