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<!-- Copyright (c) 1998, 1999 Nik Clayton, All rights reserved.
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$FreeBSD$
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<chapter id="stylesheets">
<title>* Stylesheets</title>
<para>SGML says nothing about how a document should be displayed to the
user, or rendered on paper. To do that, various languages have been
developed to describe stylesheets, including DynaText, Panorama, SPICE,
JSSS, FOSI, CSS, and DSSSL.</para>
<para>For DocBook, we are using stylesheets written in DSSSL. For HTML we
are using CSS.</para>
<sect1 id="stylesheets-dsssl">
<title>* DSSSL</title>
<para>The Documentation Project uses a slightly customised version of
Norm Walsh's modular DocBook stylesheets.</para>
<para>These can be found in
<filename role="package">textproc/dsssl-docbook-modular</filename>.</para>
<para>The modified stylesheets are not in the ports system. Instead they
are part of the Documentation Project source repository, and can be
found in <filename>doc/share/sgml/freebsd.dsl</filename>. It is well
commented, and pending completion of this section you are encouraged to
examine that file to see how some of the available options in the
standard stylesheets have been configured in order to customise the
output for the FreeBSD Documentation Project. That file also contains
examples showing how to extend the elements that the stylesheet
understands, which is how the FreeBSD specific elements have been
formatted.</para>
</sect1>
<sect1 id="stylesheets-css">
<title>CSS</title>
<para>Cascading Stylesheets (CSS) are a mechanism for attaching style
information (font, weight, size, color, and so forth) to elements in an
HTML document without abusing HTML to do so.</para>
<sect2>
<title>The Web site (HTML documents)</title>
<para>The FreeBSD web site does not currently use CSS. Unfortunately,
the look and feel is constructed using abuses of HTML of varying
degrees. This should be fixed, and would be a good project for
someone looking to contribute to the documentation project.</para>
</sect2>
<sect2>
<title>The DocBook documents</title>
<para>The FreeBSD DSSSL stylesheets include a reference to a stylesheet,
<filename>docbook.css</filename>, which is expected to appear in the
same directory as the HTML files. The project-wide CSS file is copied
from <filename>doc/share/misc/docbook.css</filename> when documents
are converted to HTML, and is installed automatically.</para>
</sect2>
</sect1>
</chapter>
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