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<appendix id="examples">
  <title>Examples</title>

  <para>This appendix contains example SGML files and command lines you can
    use to convert them from one output format to another.  If you have
    successfully installed the Documentation Project tools then you should
    be able to use these examples directly.</para>

  <para>These examples are not exhaustive&mdash;they do not contain all the
    elements you might want to use, particularly in your document's front
    matter.  For more examples of DocBook markup you should examine the SGML
    source for this and other documents, available in the
    <application>CVSup</application> <literal>doc</literal> collection, or
    available online starting at <ulink
      url="http://www.FreeBSD.org/cgi/cvsweb.cgi/doc/">http://www.FreeBSD.org/cgi/cvsweb.cgi/doc/</ulink>.</para>

  <para>To avoid confusion, these examples use the standard DocBook 3.1 DTD
    rather than the FreeBSD extension.  They also use the stock stylesheets
    distributed by Norm Walsh, rather than any customisations made to those
    stylesheets by the FreeBSD Documentation Project.  This makes them more
    useful as generic DocBook examples.</para>

  <sect1>
    <title>DocBook <sgmltag>book</sgmltag></title>

    <example>
      <title>DocBook <sgmltag>book</sgmltag></title>

      <programlisting><![ CDATA [<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook V4.1//EN">

<book>
  <bookinfo>
    <title>An Example Book</title>
    
    <author>
      <firstname>Your first name</firstname>
      <surname>Your surname</surname>
      <affiliation>
        <address><email>foo@example.com</email></address>
      </affiliation>
    </author>

    <copyright>
      <year>2000</year>
      <holder>Copyright string here</holder>
    </copyright>

    <abstract>
      <para>If your book has an abstract then it should go here.</para>
    </abstract>
  </bookinfo>

  <preface>
    <title>Preface</title>

    <para>Your book may have a preface, in which case it should be placed
      here.</para>
  </preface>
      
  <chapter>
    <title>My first chapter</title>

    <para>This is the first chapter in my book.</para>

    <sect1>
      <title>My first section</title>

      <para>This is the first section in my book.</para>
    </sect1>
  </chapter>
</book>]]></programlisting>
    </example>
  </sect1>

  <sect1>
    <title>DocBook <sgmltag>article</sgmltag></title>

    <example>
      <title>DocBook <sgmltag>article</sgmltag></title>

      <programlisting><![ CDATA [<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook V4.1//EN">

<article>
  <articleinfo>
    <title>An example article</title>

    <author>
      <firstname>Your first name</firstname>
      <surname>Your surname</surname>
      <affiliation>
        <address><email>foo@example.com</email></address>
      </affiliation>
    </author>

    <copyright>
      <year>2000</year>
      <holder>Copyright string here</holder>
    </copyright>

    <abstract>
      <para>If your article has an abstract then it should go here.</para>
    </abstract>
  </articleinfo>

  <sect1>
    <title>My first section</title>

    <para>This is the first section in my article.</para>

    <sect2>
      <title>My first sub-section</title>

      <para>This is the first sub-section in my article.</para>
    </sect2>	
  </sect1>
</article>]]></programlisting>
    </example>
  </sect1>

  <sect1>
    <title>Producing formatted output</title>

    <para>This section assumes that you have installed the software listed in
      the <filename role="package">textproc/docproj</filename> port, either by hand, or by
      using the port.  Further, it is assumed that your software is installed
      in subdirectories under <filename>/usr/local/</filename>, and the
      directory where binaries have been installed is in your
      <envar>PATH</envar>.  Adjust the paths as necessary for your
      system.</para>

    <sect2>
      <title>Using Jade</title>

      <example>
	<title>Converting DocBook to HTML (one large file)</title>
	
	<screen>&prompt.user; <userinput>jade -V nochunks \  <co id="examples-co-jade-1-nochunks">
    -c /usr/local/share/sgml/docbook/dsssl/modular/catalog \ <co id="examples-co-jade-1-catalog">
    -c /usr/local/share/sgml/docbook/catalog \
    -c /usr/local/share/sgml/jade/catalog \
    -d /usr/local/share/sgml/docbook/dsssl/modular/html/docbook.dsl \<co id="examples-co-jade-1-dsssl">
    -t sgml <co id="examples-co-jade-1-transform"> file.sgml > file.html <co id="examples-co-jade-1-filename"></userinput></screen>

	<calloutlist>
	  <callout arearefs="examples-co-jade-1-nochunks">
	    <para>Specifies the <literal>nochunks</literal> parameter to the
	      stylesheets, forcing all output to be written to
	      <abbrev>STDOUT</abbrev> (using Norm Walsh's stylesheets).</para>
	  </callout>

	  <callout arearefs="examples-co-jade-1-catalog">
	    <para>Specifies the catalogs that Jade will need to process.
	      Three catalogs are required.  The first is a catalog that
	      contains information about the DSSSL stylesheets.  The second
	      contains information about the DocBook DTD.  The third contains
	      information specific to Jade.</para>
	  </callout>

	  <callout arearefs="examples-co-jade-1-dsssl">
	    <para>Specifies the full path to the DSSSL stylesheet that Jade
	      will use when processing the document.</para>
	  </callout>

	  <callout arearefs="examples-co-jade-1-transform">
	    <para>Instructs Jade to perform a
	      <emphasis>transformation</emphasis> from one DTD to another.  In 
	      this case, the input is being transformed from the DocBook DTD
	      to the HTML DTD.</para>
	  </callout>

	  <callout arearefs="examples-co-jade-1-filename">
	    <para>Specifies the file that Jade should process, and redirects
	      output to the specified <filename>.html</filename> file.</para>
	  </callout>
	</calloutlist>
      </example>

      <example>
	<title>Converting DocBook to HTML (several small files)</title>
	
	<screen>&prompt.user; <userinput>jade \
    -c /usr/local/share/sgml/docbook/dsssl/modular/catalog \ <co id="examples-co-jade-2-catalog">
    -c /usr/local/share/sgml/docbook/catalog \
    -c /usr/local/share/sgml/jade/catalog \
    -d /usr/local/share/sgml/docbook/dsssl/modular/html/docbook.dsl \<co id="examples-co-jade-2-dsssl">
    -t sgml <co id="examples-co-jade-2-transform"> <replaceable>file</replaceable>.sgml <co id="examples-co-jade-2-filename"></userinput></screen>

	<calloutlist>
	  <callout arearefs="examples-co-jade-2-catalog">
	    <para>Specifies the catalogs that Jade will need to process.
	      Three catalogs are required.  The first is a catalog that
	      contains information about the DSSSL stylesheets.  The second
	      contains information about the DocBook DTD.  The third contains
	      information specific to Jade.</para>
	  </callout>

	  <callout arearefs="examples-co-jade-2-dsssl">
	    <para>Specifies the full path to the DSSSL stylesheet that Jade
	      will use when processing the document.</para>
	  </callout>

	  <callout arearefs="examples-co-jade-2-transform">
	    <para>Instructs Jade to perform a
	      <emphasis>transformation</emphasis> from one DTD to another.  In 
	      this case, the input is being transformed from the DocBook DTD
	      to the HTML DTD.</para>
	  </callout>

	  <callout arearefs="examples-co-jade-2-filename">
	    <para>Specifies the file that Jade should process.  The
	      stylesheets determine how the individual HTML files will be
	      named, and the name of the <quote>root</quote> file (i.e., the 
	      one that contains the start of the document.</para>
	  </callout>
	</calloutlist>

	<para>This example may still only generate one HTML file, depending on 
	  the structure of the document you are processing, and the
	  stylesheet's rules for splitting output.</para>
      </example>

      <example id="examples-docbook-postscript">
	<title>Converting DocBook to Postscript</title>

	<para>The source SGML file must be converted to a TeX file.</para>

	<screen>&prompt.user; <userinput>jade -Vtex-backend \ <co id="examples-co-jade-3-tex-backend">
    -c /usr/local/share/sgml/docbook/dsssl/modular/catalog \ <co id="examples-co-jade-3-catalog">
    -c /usr/local/share/sgml/docbook/catalog \
    -c /usr/local/share/sgml/jade/catalog \
    -d /usr/local/share/sgml/docbook/dsssl/modular/print/docbook.dsl \<co id="examples-co-jade-3-dsssl">
    -t tex <co id="examples-co-jade-3-tex"> <replaceable>file</replaceable>.sgml</userinput></screen>

	<calloutlist>
	  <callout arearefs="examples-co-jade-3-tex-backend">
	    <para>Customises the stylesheets to use various options
	      specific to producing output for TeX.</para>
	  </callout>
	  
	  <callout arearefs="examples-co-jade-3-catalog">
	    <para>Specifies the catalogs that Jade will need to process. Three
	      catalogs are required.  The first is a catalog that contains
	      information about the DSSSL stylesheets.  The second contains
	      information about the DocBook DTD.  The third contains
	      information specific to Jade.</para>
	  </callout>

	  <callout arearefs="examples-co-jade-3-dsssl">
	    <para>Specifies the full path to the DSSSL stylesheet that
	      Jade will use when processing the document.</para>
	  </callout>

	  <callout arearefs="examples-co-jade-3-tex">
	    <para>Instructs Jade to convert the output to TeX.</para>
	  </callout>
	</calloutlist>

	<para>The generated <filename>.tex</filename> file must now be run 
	  through <command>tex</command>, specifying the
	  <literal>&amp;jadetex</literal> macro package.</para>
	    
	<screen>&prompt.user; <userinput>tex "&amp;jadetex" <replaceable>file</replaceable>.tex</userinput></screen>

	<para>You have to run <command>tex</command> <emphasis>at
	  least</emphasis> three times.  The first run processes the
	  document, and determines areas of the document which are referenced
	  from other parts of the document, for use in indexing, and so
	  on.</para>

	<para>Do not be alarmed if you see warning messages such as
	  <literal>LaTeX Warning: Reference `136' on page 5 undefined on input
	  line 728.</literal> at this point.</para>
	
	<para>The second run reprocesses the document now that certain pieces
	  of information are known (such as the document's page length).  This
	  allows index entries and other cross-references to be fixed
	  up.</para>

	<para>The third pass performs any final cleanup necessary.</para>
	
	<para>The output from this stage will be
	  <filename><replaceable>file</replaceable>.dvi</filename>.</para>
	
	<para>Finally, run <command>dvips</command> to convert the
	  <filename>.dvi</filename> file to Postscript.</para>

	<screen>&prompt.user; <userinput>dvips -o <replaceable>file</replaceable>.ps <replaceable>file.dvi</replaceable></userinput></screen>
      </example>

      <example>
	<title>Converting DocBook to PDF</title>

	<para>The first part of this process is identical to that when
	  converting DocBook to Postscript, using the same
	  <command>jade</command> command line (<xref
	    linkend="examples-docbook-postscript">).</para>

	<para>When the <filename>.tex</filename> file has been generated you
	  run pdfTeX.  However, use the &amp;pdfjadetex macro package
	  instead.</para>

	<screen>&prompt.user; <userinput>pdftex "&amp;pdfjadetex" <replaceable>file</replaceable>.tex</userinput></screen>

	<para>Again, run this command three times.</para>

	<para>This will generate
	  <filename><replaceable>file</replaceable>.pdf</filename>, which does 
	  not need to be processed any further.</para>
      </example>
    </sect2>
  </sect1>
</appendix>

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