Attribute list for the <supplementary-material> element
<!ENTITY % supplementary-material-atts
"alternate-form-of
IDREF #IMPLIED
content-type
CDATA #IMPLIED
id ID #IMPLIED
mimetype CDATA #IMPLIED
mime-subtype
CDATA #IMPLIED
%display-atts;
%might-link-atts;
xml:lang NMTOKEN #IMPLIED" >display.ent