%back-model;
Back Matter Model
Content model for the back matter (<back>) of the document, for example, ancillary material such as appendices.
Model
<!ENTITY % back-model "(label?, title*, (%doc-back-matter-mix;)* )">
Expanded Model
(label?, title*, (ack | app-group | bio | fn-group | glossary | ref-list | notes | sec)* )