1 <?xml version="1.0"?>

     2 <!DOCTYPE doc [

     3 <!ELEMENT doc (#PCDATA)>

     4 <!ENTITY % e SYSTEM "something">

     5 <!ENTITY replace "replace">

     6 <!ENTITY me "me">

     7 %e;

     8 ]>

     9 <doc a="do &replace; me">and &me; too</doc>