<?xml-stylesheet href="data:text/css,"?>
<test>
  FA<!--

   This file is not a well formed, as it is sent as application/xml,
   without a charset parameter nor an XML declaration nor a BOM, and
   it is therefore assumed to be UTF-8, but it contains a byte that is
   invalid UTF-8 below (namely byte 0xFE, binary 11111110).

   If this file gives you a parse error, then this test has PASSED. þ

  -->IL
</test>