<?xml version="1.0"?>
<!DOCTYPE root [
  <!ELEMENT root (#PCDATA|b)* >
  <!ELEMENT b EMPTY>
  <!ELEMENT not_unique ANY>
  <!ELEMENT not_unique EMPTY>
  <!ELEMENT not_unique (b,b) >
  <!ELEMENT unique. ANY>
  <!ATTLIST b attr1 CDATA #IMPLIED>
  <!ATTLIST b attr2 CDATA #IMPLIED>
  <!ATTLIST b attr3 CDATA #IMPLIED>
]>
<root>
  <b/>without white space
  <b /> with a white space
  <b attr1="value1" />
  <b attr1="value1" attr2="value2" attr3 = "value3"/>
</root>
<!--* a invalid test: testing P45 VC unique element type decl  *-->