<!DOCTYPE doc [ <!ELEMENT doc (src | dest)*> <!ELEMENT src EMPTY> <!ELEMENT dest EMPTY> <!ATTLIST src ref IDREF #IMPLIED> <!ATTLIST dest id ID #IMPLIED> ]> <doc> <src ref="foo"/> <dest id="foo"/> <src ref="foo"/> </doc>
<!DOCTYPE doc [ <!ELEMENT doc (src | dest)*> <!ELEMENT src EMPTY> <!ELEMENT dest EMPTY> <!ATTLIST src ref IDREF #IMPLIED> <!ATTLIST dest id ID #IMPLIED> ]> <doc> <src ref="foo"/> <dest id="foo"/> <src ref="foo"/> </doc>
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