Each file in a book can have its numbering system. For example, you might start page numbering at i on the title page, at 1 in the first chapter, and then number continuously through subsequent chapters. You can also add volume, chapter, section, and subsection numbers to page numbers. For example, the chapter number 2 in page number 2-1. All body pages in a document have the same numbering style.
The numbering properties in the book override the numbering properties in documents that belong to the book. If you are setting up page numbering in a book, make sure to change the numbering properties by selecting documents in the book window instead of making changes in the individual documents.
You can change volume, chapter, section, subsection, page, paragraph, footnote, and table footnote numbering in your documents.
You can add Volume Number, Chapter Number, Section Number, Sub Section Number, and Current Page # variables to page headers and footers. You can also use the <$volnum>, <$chapnum>, <$sectionnum>, <$subsectionnum>, and <$pagenum> building blocks to cross-reference formats, paragraph auto numbers, or generated files.
The folder level of a file in a book determines the numbering of files within a book folder. For a file inside a first-level folder, the chapter number is inherited from the parent book and cannot be edited. You can only set the section number for the files. For a file in a first-level folder, the Chapter tab is disabled in the Numbering Properties dialog box.
Similarly, a file within a second-level folder inherits the chapter and section numbers, but you can set the subsection numbers.
The level at which a child book is included in a book determines the numbering settings of its documents. For example, all files in a child book at the first level inherit the chapter number from the parent book. The section numbers increment for each file in the child book.