lfs-book/stylesheets/lfs-xsl/docbook-xsl-1.78.1/params/graphicsize.extension.xml

<refentry xmlns="http://docbook.org/ns/docbook"
          xmlns:xlink="http://www.w3.org/1999/xlink"
          xmlns:xi="http://www.w3.org/2001/XInclude"
          xmlns:src="http://nwalsh.com/xmlns/litprog/fragment"
          xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
          version="5.0" xml:id="graphicsize.extension">
<refmeta>
<refentrytitle>graphicsize.extension</refentrytitle>
<refmiscinfo class="other" otherclass="datatype">boolean</refmiscinfo>
</refmeta>
<refnamediv>
<refname>graphicsize.extension</refname>
<refpurpose>Enable the getWidth()/getDepth() extension functions</refpurpose>
</refnamediv>

<refsynopsisdiv>
<src:fragment xml:id="graphicsize.extension.frag">
<xsl:param name="graphicsize.extension" select="1"/>
</src:fragment>
</refsynopsisdiv>

<refsection><info><title>Description</title></info>

<para>If non-zero (and if <parameter>use.extensions</parameter> is non-zero
and if you're using a processor that supports extension functions), the
<function>getWidth</function> and <function>getDepth</function> functions
will be used to extract image sizes from graphics.</para>

<para>The main supported image formats are GIF, JPEG, and PNG. Somewhat cruder 
support for EPS and PDF images is also available.</para>
</refsection>
</refentry>