1<?xml version="1.0"?>
2
3<!DOCTYPE foo [
4
5<!ELEMENT foo (bar)>
6<!ATTLIST foo id CDATA #IMPLIED>
7<!ELEMENT bar (#PCDATA|cheese)*>
8<!ATTLIST bar id ID #REQUIRED>
9<!ELEMENT cheese (#PCDATA)>
10<!ATTLIST cheese kind ID #IMPLIED>
11]>
12
13<foo id="foobar">
14  <bar id="fb1">
15    baz
16    <cheese kind="edam">gouda</cheese>
17    baz
18    <cheese kind="gouda">cheddar</cheese>
19    baz
20  </bar>
21</foo>
22