%source-elements;
Source Elements
Elements that can be included along with data characters inside the content model of the <source> and <trans-source> elements
Model
<!ENTITY % source-elements "| %emphasis.class; | %address-link.class; | %subsup.class;" >
Expanded Model
| bold | fixed-case |italic | monospace | overline | roman | sans-serif | sc | strike | underline | ruby | email | ext-link | uri | sub | sup