<?xml version="1.0"?> <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" []> <book lang="en_US"> <!-- centos-art(docbook): book.title --> <!-- centos-art(docbook): book.bookinfo --> <!-- centos-art(docbook): book.preface --> <!-- centos-art(docbook): book.part --> </book>