Content model for the back matter (<back>) of a book or book component, i.e., ancillary material such as appendices
<!ENTITY % back-model "(label?, title*, (%doc-back-matter-mix; | %just-table.class;)* )" >
(label?, title*, (ack | app-group | bio | fn-group | glossary | ref-list | notes | sec | table-wrap)* )
bookandcoll-for-taglib3.dtd