<?xml version="1.1" encoding="iso-8859-1"?>
<!-- Has a NEL character in an NMTOKENS attribute; well-formed in both
     XML 1.0 and 1.1, but valid only in 1.1 -->
<!DOCTYPE foo [
<!ELEMENT foo ANY>
<!ATTLIST foo bar NMTOKENS #IMPLIED>
]>
<foo bar="abc…def"/>
