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%book-parts-mix; Book Parts Mix

All the named and generic elements that may appear in front or back matter.
Declaration
<!ENTITY % book-parts-mix
                        "%book-part.class; | %book-back-only.class; |
                         %front-only.class; | %front-back.class; |
                         %both-front-back.class;"                    >
Expanded Declaration

book-part | xi:include | book-app | book-app-group | floats-group | index | index-group | ref-list | front-matter-part | foreword | preface | notes | ack | bio | dedication | fn-group | glossary | toc | toc-group