<!--
  Sample article DTD for XML.COM
  +//ISBN 1-894049::CSL::Articles//DTD XML.COM Article//EN
  G. Ken Holman
  mailto:gkholman@CraneSoftwrights.com
  http://www.CraneSoftwrights.com
  
  1999-04-22 12:50
-->

                                                     <!--main structure-->
<!ELEMENT article    ( title, author, copyright, section+ )>
<!ELEMENT author     ( name, affil )>         <!--who wrote the article-->
<!ELEMENT name       ( #PCDATA )>
<!ATTLIST name       email CDATA #REQUIRED>
<!ELEMENT affil      ( #PCDATA )>                      <!--affilliation-->
<!ATTLIST affil      url CDATA #IMPLIED>
<!ELEMENT copyright  ( #PCDATA )>                            <!--rights-->
                                                  <!--article hierarchy-->
<!ELEMENT section    ( title, 
                       ( para | monospc | sidebar | image | extlinkset )+, 
                       section* )>
                                                  <!--a side discussion-->
<!ATTLIST section    id ID #REQUIRED>
<!ELEMENT sidebar    ( title, ( para | monospc )+ )>
<!ATTLIST sidebar    id ID #REQUIRED
                     xml-rendering ( suppress | preserve ) "preserve">
<!ELEMENT title      ( #PCDATA )>               <!--titles of all kinds-->
                                                    <!--article content-->
<!ELEMENT para       ( #PCDATA | sidebar | 
                       emph | monospc | extlink | intlink )*>
<!ELEMENT emph       ( #PCDATA )>                          <!--emphasis-->
<!ELEMENT monospc    ( #PCDATA )>                    <!--code fragments-->
<!ELEMENT image      ( #PCDATA )>                <!--image with caption-->
<!ATTLIST image      href CDATA #REQUIRED>

<!ELEMENT extlinkset ( extlink+ )>                    <!--a set of URLs-->
<!ELEMENT extlink    ( #PCDATA | monospc )*>          <!--external link-->
<!ATTLIST extlink    href CDATA #REQUIRED>
<!ELEMENT intlink    EMPTY>                           <!--internal link-->
<!ATTLIST intlink    idref IDREF #REQUIRED>  <!--point to titled object-->

<!--end of file-->