Oasis XML Catalog 1.0 样例

<catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
<public publicId="-//OASIS//DTD XML DocBook V4.1.2//EN"
   uri="docbook/xml/docbookx.dtd"/>
<system systemId="urn:x-oasis:docbook-xml-v4.1.2"
   uri="docbook/xml/docbookx.dtd"/>
</catalog>

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