xnoteset is a wrapper for one or more xnote elements. The namespace is "http://refdb.sourceforge.net/namespaces/xnote".
<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE xnoteset PUBLIC "-//Markus Hoenicka//DTD Xnote V1.2//EN" "http://refdb.sourceforge.net/dtd/xnote-1.2/xnote.dtd" [ <!ENTITY lt "<"> <!ENTITY gt ">"> <!ENTITY amp "&"> ]> <xnoteset xmlns="http://refdb.sourceforge.net/namespaces/xnote"> <xnote> ... </xnote> <xnote> ... </xnote> </xnoteset>