<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>

<!DOCTYPE a [
<!ATTLIST a  att1  CDATA  #IMPLIED>
<!ELEMENT a  (z, c?)>
<!ELEMENT b  EMPTY>
<!ELEMENT c  (#PCDATA)>
]>

<a att2="test">
    <y/>
    <c>hello world</c>
</a>
