<?xml version="1.0"?>
<!DOCTYPE root [
  <!ELEMENT root (#PCDATA|b)* >
  <!ELEMENT b (#PCDATA) >
  <!ATTLIST b attr2 (abc|def) "abc">
  <!ATTLIST b attr3 CDATA #FIXED "fixed">
]>
<root>
  <b attr1="value1" attr2="def" attr3="fixed">attr1 not declared</b>
</root>
<!--* testing VC:Attribute Value Type  *-->