<?xml version="1.0" standalone="yes"?>
<!DOCTYPE family [
  <!ELEMENT family (#PCDATA|title|parent|child|image)*>
  <!ELEMENT title (#PCDATA)>
  <!ELEMENT parent (#PCDATA)>
  <!ATTLIST parent role (mother | father) #REQUIRED>
  <!ELEMENT child (#PCDATA)>
  <!ATTLIST child role (daughter | son) #REQUIRED>
  <!NOTATION gif SYSTEM "image/gif">
  <!ENTITY JENN SYSTEM "http://images.about.com/sites/guidepics/html.gif"
    NDATA gif>
  <!ELEMENT image EMPTY>
  <!ATTLIST image source ENTITY #REQUIRED>
  <!ENTITY footer "Brought to you by Jennifer Kyrnin">
]>
<family>
  <title>My Family</title>
  <parent role="mother">Judy</parent>
  <parent role="father">Layard</parent>
  <child role="daughter">Jennifer</child>
  <image source="JENN" />
  <child role="son">Brendan</child>
  &footer;
</family>
