book-part-type Type of Book Part

Type of narrative material, for example, a book part (such as a chapter, dedication, preface, etc.).
OPTIONAL on many elements; click for list and usage
Value Meaning
Text, numbers, or special characters The type of narrative material, for example, “foreword”.
Restriction @book-part-type is an optional attribute; there is no default.
Tagged Sample

Identifying a book segment as a chapter

...
<book-part book-part-type="chapter">
 <book-part-meta>...</book-part-meta>
 ...
</book-part>
...