Once you have chapters in a book, you and other users can begin to open, close, and track chapters using the Book palette. The Status column in the Book palette shows the current state of each chapter:

• Available indicates that you can open the chapter.
• Open indicates that you already have the chapter open on your computer.
• [User name] indicates that another user has the chapter open. The user name reflects the name assigned to the user’s computer. Consult the documentation resources provided with your computer to learn about file sharing and computer naming.
• Modified indicates that the chapter has been opened and edited independently of the book. To update the status to Available, reopen the chapter through the Book palette, and then close the chapter.
• Missing indicates that the chapter’s file has been moved since it was added to the book. Double-click the chapter name to display a dialog box; then locate the file.