Content Model

<!ENTITY % product-elements
                        "| %article-link.class; |
                         %appearance.class; | %break.class; |
                         %citation-additions.class; |
                         %emphasis.class;  |
                         %inline-display.class; |
                         %inline-math.class; | %label.class; |
                         %math.class; | %phrase.class; |
                         %price.class; | %references.class; |
                         %simple-link.class; |
                         %subsup.class; | %x.class;"                 >

Expanded Content Model

| inline-supplementary-material | related-article | related-object | hr | break | string-date | 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 | label | tex-math | mml:math | abbrev | milestone-end | milestone-start | named-content | styled-content | price | annotation | article-title | chapter-title | collab | comment | conf-date | conf-loc | conf-name | conf-sponsor | date | date-in-citation | day | edition | email | elocation-id | etal | ext-link | fpage | gov | institution | isbn | issn | issue | issue-id | issue-part | issue-title | lpage | month | name | name-alternatives | object-id | page-range | part-title | patent | person-group | pub-id | publisher-loc | publisher-name | role | season | series | size | source | std | string-name | supplement | trans-source | trans-title | uri | volume | volume-id | volume-series | year | fn | target | xref | sub | sup | x