Content Model

<!ENTITY % ext-link-elements
                        "| %emphasis.class;| %inline-display.class; |
                         %just-base-display-noalt.class; | 
                         %phrase-content.class; | 
                         %subsup.class;"                             >

Expanded Content Model

| bold | italic | monospace | overline | overline-start | overline-end | roman | sans-serif | sc | strike | underline | underline-start | underline-end| alternatives | inline-graphic | private-char | graphic | media | named-content | styled-content | sub | sup