Content Model

<!ENTITY % collab-elements 
                        "| %article-link.class; | %address.class; |
                         %appearance.class; | %break.class; | 
                         %contrib-group.class; | 
                         %contrib-info.class; | 
                         %emphasis.class; | %inline-display.class; | 
                         %inline-math.class; | %math.class; |  
                         %phrase.class; | %subsup.class; | %x.class;">

Expanded Content Model

| inline-supplementary-material | related-article | related-object | addr-line | country | fax | institution | phone | hr | break | contrib-group | address | aff | author-comment | bio | email | etal | ext-link | fn | on-behalf-of | role | uri | xref | bold | italic | monospace | overline | overline-start | overline-end | roman | sans-serif | sc | strike | underline | underline-start | underline-end | alternatives | inline-graphic | private-char | chem-struct | inline-formula | tex-math | mml:math | abbrev | milestone-end | milestone-start | named-content | styled-content | sub | sup | x