Description of Erratum
Figure 8-21 shows setting the display options on the Chapter content type and shows several fields the chapter never told you to create. Figure 8-18 does the same. I know the book isn't supposed to detail every single step but I ran into problems when I tried to figure out how to follow here and would have appreciated some instruction. For example one of the fields not described is Internal name and this field is referenced on this page where you are told to enter a value into it when you create your first Chapter.
Give instructions for creating the additional fields.