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%contrib-info.class; Contributor Information Class Elements

Elements that may be used to provide additional information about a <contrib>, including external links such as <ext-link> and <uri>, as well as internal links such as <xref>. (For more such elements, see the parameter entity %contrib-model;.)
Declaration
<!ENTITY % contrib-info.class
                        "address | aff | aff-alternatives |
                         author-comment | bio | email | ext-link |
                         on-behalf-of | role | uri | xref"           >