Content model for the <supplementary-material> element.
<!ENTITY % supplementary-material-model "((%id.class;)*, (%caption.class;)?, (%access.class; | %address-link.class;)*, (%just-para.class;)*, %display-back-matter; )" >
((object-id)*, (caption)?, (alt-text | long-desc | email | ext-link | uri)*, (p)*, attrib?, permissions? )
JATS-articleauthcustom-models1.ent