A book with no links is a simple TOC item that opens when clicked to display its contents — pages and sub-books. Create books with no links when you want to organize information and create a hierarchy of books and pages in your table of contents.
In RoboHELP, click the TOC tab.
Click New
Book .
In Title, enter the name of the book as you want it displayed in the table of contents.
In Type, select Book with no Links.
Note: The book must include at least one page or it will not be displayed in the Contents tab when you generate the Help system.