Model

<!ENTITY % code-elements
                        "| %address-link.class; |  %emphasis.class; | 
                         %inline-display-noalt.class; | 
                         %phrase.class; |  %simple-link.class; |
                         %subsup.class;"                             >

Expanded Model

| email | ext-link | uri | bold | fixed-case | italic | monospace | overline | overline-start | overline-end | roman | sans-serif | sc | strike | underline | underline-start | underline-end | ruby | inline-graphic | inline-media | private-char | abbrev | index-term | index-term-range-end | milestone-end | milestone-start | named-content | styled-content | fn | target | xref | sub | sup