xml2

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE contracts [<!ENTITY terminos SYSTEM “http://server/terms”>]>
<contracts>
   <contract>
      <id>1</id>
      <header>…</header>
      <body>…</body>
      <terms>&terminos;</terms>
   </contract>
   …
   …
   <contract>
      <id>1000</id>
      <header>…</header>
      <body>…</body>
      <terms>&terminos;</terms>
   </contract>
</contracts>