1<?xml version='1.0'?> 2<!DOCTYPE sxe SYSTEM "notfound.dtd" [ 3<!ENTITY % incent SYSTEM "sxe.ent"> 4%incent; 5]> 6<sxe id="elem1"> 7 <elem1 attr1='first'> 8 <!-- comment --> 9 <elem2> 10 <elem3> 11 <elem4> 12 <?test processing instruction ?> 13 </elem4> 14 </elem3> 15 </elem2> 16 </elem1> 17</sxe> 18