As we mentioned earlier, all documents are made up of a prolog and a body. The document prolog contains the XML Declaration and the document body contains the actual marked up document. Recall from previous sections that we had developed a CONTACTS XML document that looked something like the following:

          <!--Beginning of prolog-->

     <?xml version = "1.0" encoding="UTF-8" standalone = "yes"?>

          <!--End of prolog-->
          <!--Beginning of body-->

     <CONTACTS>

     <CONTACT>
     <NAME>Gunther Birznieks</NAME>
     <EMAIL>gunther@bobsfishstore.com</EMAIL>
     <PHONE>662-9999</PHONE>
     </CONTACT>

     <CONTACT>
     <NAME>Susan Czigonu</NAME>
     <EMAIL>susan@eudora.org</EMAIL>
     <PHONE>555-1234</PHONE>
     </CONTACT>

     </CONTACTS>

          <!--End of body-->

What we did not say earlier was that the prolog also holds the DTD.