1.0.0 Describes the book layout and packaging. 1.0.0 Describes the book layout and packaging. 1.0.0 Specifies the id of this book. This is a symbolic name for a particular book from this project. 1.0.0 Specifies the title of this book. 1.0.0 Specifies the author of this book. 1.0.0 Specifies the date of this book. 1.0.0 Specifies a collection of chapters. 1.0.0 1.0.0 Specifies the id of this chapter. This is a symbolic name for a particular chapter. 1.0.0 Specifies the title of this chapter. 1.0.0 Specifies a collection of sections. 1.0.0 1.0.0 Specifies the id of this section. This is a symbolic name for a particular section. 1.0.0 Specifies the title of this section. 1.0.0 Specifies the file of this section.