1 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
   2 <!DOCTYPE toys [
   3 <!ENTITY toy3 "<name>Transformer X</name><price>519</price>">
   4 ]>
   5 
   6 <toys>
   7 
   8     <toy id="1">  
   9         <name>The Martian</name>
  10         <price>98470</price>
  11     </toy>
  12     <toy id="2">
  13         <name>The Doll</name>
  14         <price>345</price>
  15     </toy>         
  16     <toy id="3">
  17         &toy3;
  18     </toy>    
  19     <toy id="4">
  20         <name>The Spaceship</name>
  21         <price>725</price>
  22     </toy>         
  23      
  24 </toys>