<!DOCTYPE attributes [
<!NOTATION bar SYSTEM 'file:/dev/tty'>
<!NOTATION foo PUBLIC '-//public id//foo' 'file:/dev/null'>
<!NOTATION nonce SYSTEM 'file:/dev/null'>
]>
<attributes cdata="nothing happens to this one!" entities="unparsed-1 unparsed-2" entity="unparsed-1" id="internal42" idref="internal42" idrefs="internal42 internal42 internal42" nmtoken="this-gets-normalized" nmtokens="this also gets normalized" notation="nonce" token="a"></attributes>