<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="page.width"> <refmeta> <refentrytitle>page.width</refentrytitle> <refmiscinfo class="other" otherclass="datatype">length</refmiscinfo> </refmeta> <refnamediv> <refname>page.width</refname> <refpurpose>The width of the physical page</refpurpose> </refnamediv> <refsynopsisdiv> <src:fragment xml:id="page.width.frag"><xsl:param name="page.width"> <xsl:choose> <xsl:when test="$page.orientation = 'portrait'"> <xsl:value-of select="$page.width.portrait"/> </xsl:when> <xsl:otherwise> <xsl:value-of select="$page.height.portrait"/> </xsl:otherwise> </xsl:choose> </xsl:param></src:fragment> </refsynopsisdiv> <refsection><info><title>Description</title></info> <para>The page width is generally calculated from the <parameter>paper.type</parameter> and <parameter>page.orientation</parameter> parameters.</para> </refsection> </refentry>