Elements that can be included along with data characters inside the content model of linking elements, such as <xref>, <target>, and <ext-link>
<!ENTITY % link-elements "| %emphasis.class; | %phrase-content.class; | %subsup.class;" >
| bold | italic | monospace | overline | roman | sans-serif | sc | strike | underline | named-content | styled-content | sub | sup
JATS-common1.ent