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在线引用DOCTYPE头,这样在创建文档的时候速度会比较慢。
<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook V5.0//EN" "http://www.oasis-open.org/docbook/xml/5.0/docbook.dtd">
我们也可使使用本地的DTD文件
<!DOCTYPE subject SYSTEM "/usr/share/xml/docbook/schema/dtd/4.5/docbookx.dtd" [ <!ENTITY book.info.author.xml SYSTEM "../common/book.info.author.xml"> <!ENTITY book.info.legalnotice.xml SYSTEM "../common/book.info.legalnotice.xml"> <!ENTITY book.info.abstract.xml SYSTEM "../common/book.info.abstract.xml"> <!ENTITY book.preface.xml SYSTEM "../common/book.preface.xml"> <!ENTITY preface.about.me.xml SYSTEM "../common/about.me.xml"> <!ENTITY chapter.docbook SYSTEM "chapter.docbook.xml"> <!ENTITY chapter.docbook.doctype.xml SYSTEM "chapter.docbook.doctype.xml"> <!ENTITY chapter.docbook.list.xml SYSTEM "chapter.docbook.list.xml"> <!ENTITY chapter.docbook.paragraphs.xml SYSTEM "chapter.docbook.paragraphs.xml"> <!ENTITY chapter.docbook.admonition.xml SYSTEM "chapter.docbook.admonition.xml"> <!ENTITY chapter.docbook-website.xml SYSTEM "chapter.docbook-website.xml"> <!ENTITY chapter.docbook.epub.xml SYSTEM "chapter.docbook.epub.xml"> ]>
<!DOCTYPE article PUBLIC "-//FreeBSD//DTD DocBook XML V4.5-Based Extension//EN" "../../../share/xml/freebsd45.dtd">