<?xml version="1.0"?> <!DOCTYPE iddemo [ <!ELEMENT iddemo (head?, (chapter)*)> <!ATTLIST iddemo id ID #IMPLIED> <!ELEMENT head (title?, (p)*)> <!ATTLIST head id ID #IMPLIED> <!ELEMENT chapter (title?, (p | image)*)> <!ATTLIST chapter id ID #IMPLIED> <!ELEMENT image EMPTY> <!ATTLIST image href CDATA #IMPLIED> <!ELEMENT title (#PCDATA)> <!ELEMENT p (#PCDATA)> ]> <iddemo> <head> <title>Welcome to Gnome</title> </head> <chapter id="chapter1"> <title>The Linux adventure</title> <p>bla bla bla ...</p> <image href="linus.gif"/> <p>...</p> <p>third p</p> <p>fourth p</p> </chapter> <chapter id="chapter2"> <title>Chapter 2</title> <p>this is chapter 2 ...</p> </chapter> <chapter id="chapter3"> <title>Chapter 3</title> <p>this is chapter 3 ...</p> </chapter> <chapter id="chapter4"> <title>Chapter 4</title> <p>this is chapter 4 ...</p> </chapter> <chapter id="chapter5"> <title>Chapter 5</title> <p>this is chapter 5 ...</p> </chapter> </iddemo>