Working with XML and DocBook

Like its ancestor SGML and cousin HTML, XML is a markup language. It is designed for use in a plain-text document. Tags surround specific sections of the text to denote how that section is to be displayed. Listing 5.1 contains a short example.

LISTING 5.1 Sample XML Excerpt

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<?xml version="1.0"?><xml-stylesheet type="text/css" href="book.css"?><book><title>Ubuntu Unleashed 2013</title><edition>8</edition><chapter>       <number>1</number>       <title>Installing Ubuntu</title>       <text>               <paragraph><dropcap>N</dropcap>ot that long ago,the mere mention...               </paragraph>       ...       </text></chapter>...</book>

This could easily be written using a simple ...

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