A wrapper element used to exchange a book part such as a chapter (<book-part>).
<!ELEMENT book-part-wrapper %book-part-wrapper-model; >
(collection-meta*, book-meta, (book-part | app | app-group | floats-group | index | index-group | ref-list | front-matter-part | foreword | preface | notes | ack | bio | dedication | fn-group | glossary | toc | toc-group))
The following, in order:
BITS-book-part0.ent