Declaration

<!ENTITY % graphic-atts
             "alternate-form-of
                        IDREF                            #IMPLIED
              alt-version
                        (yes|no)                             'no'
              id        ID                               #IMPLIED
              mime-subtype  
                        (cgm | g3fax | gif | ief |  jpeg | naplps | 
                         png | prs.btif | prs.pti | t38 | tiff |  
                         tiff-fx)                         #IMPLIED 
              mimetype  CDATA                       #FIXED 'image'
              %display-atts;                                       
              %link-atts;"                                           >