Content model for a chemical structure <chem-struct-wrapper> element
<!ENTITY % chem-struct-wrapper-model "((%id.class;)*, (%label.class;)?, (%caption.class;)?, (%access.class; | %address-link.class;)*, (%simple-intable-display.class;)+, (%display-back-matter.class;)* )" >
display.ent