--- /dev/null
+<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="body.margin.inner">
+<refmeta>
+<refentrytitle>body.margin.inner</refentrytitle>
+<refmiscinfo class="other" otherclass="datatype">length</refmiscinfo>
+</refmeta>
+<refnamediv>
+<refname>body.margin.inner</refname>
+<refpurpose>Specify the size of the inner margin of the body region</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+<src:fragment xml:id="body.margin.inner.frag">
+<xsl:param name="body.margin.inner">0.5in</xsl:param>
+</src:fragment>
+</refsynopsisdiv>
+
+<refsection><info><title>Description</title></info>
+
+<para>The inner body margin is the extra inner side
+(binding side) margin taken from the body
+region in addition to the inner page margin.
+It makes room for a side region for text content whose width is
+specified by the <parameter>region.inner.extent</parameter>
+parameter.</para>
+
+<para>For double-sided output,
+this side region
+is <literal>fo:region-start</literal> on a odd-numbered page,
+and <literal>fo:region-end</literal> on an even-numbered page.</para>
+
+<para>For single-sided output,
+this side region
+is <literal>fo:region-start</literal> for all pages.</para>
+
+<para>This correspondence applies to all languages,
+both left-to-right and right-to-left writing modes.</para>
+
+<para>The default value is zero.</para>
+</refsection>
+</refentry>
--- /dev/null
+<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="body.margin.outer">
+<refmeta>
+<refentrytitle>body.margin.outer</refentrytitle>
+<refmiscinfo class="other" otherclass="datatype">length</refmiscinfo>
+</refmeta>
+<refnamediv>
+<refname>body.margin.outer</refname>
+<refpurpose>Specify the size of the outer margin of the body region</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+<src:fragment xml:id="body.margin.outer.frag">
+<xsl:param name="body.margin.outer">0.5in</xsl:param>
+</src:fragment>
+</refsynopsisdiv>
+
+<refsection><info><title>Description</title></info>
+
+<para>The outer body margin is the extra outer side
+(opposite the binding side) margin taken
+from the body
+region in addition to the outer page margin.
+It makes room for a side region for text content whose width is
+specified by the <parameter>region.outer.extent</parameter>
+parameter.</para>
+
+<para>For double-sided output,
+this side region
+is <literal>fo:region-end</literal> on a odd-numbered page,
+and <literal>fo:region-start</literal> on an even-numbered page.</para>
+
+<para>For single-sided output,
+this side region
+is <literal>fo:region-end</literal> for all pages.</para>
+
+<para>This correspondence applies to all languages,
+both left-to-right and right-to-left writing modes.</para>
+
+<para>The default value is zero.</para>
+</refsection>
+</refentry>
--- /dev/null
+<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="region.inner.extent">
+<refmeta>
+<refentrytitle>region.inner.extent</refentrytitle>
+<refmiscinfo class="other" otherclass="datatype">length</refmiscinfo>
+</refmeta>
+<refnamediv>
+<refname>region.inner.extent</refname>
+<refpurpose>Specifies the width of the inner side region</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+<src:fragment xml:id="region.inner.extent.frag">
+<xsl:param name="region.inner.extent">0.4in</xsl:param>
+</src:fragment>
+</refsynopsisdiv>
+
+<refsection><info><title>Description</title></info>
+
+<para>The region inner extent is the width of the optional
+text area next to the inner side (binding side) of the
+body region. </para>
+
+<para>For double-sided output, this side region
+is <literal>fo:region-start</literal> on a odd-numbered page,
+and <literal>fo:region-end</literal> on an even-numbered page.</para>
+
+<para>For single-sided output, this side region
+is <literal>fo:region-start</literal> for all pages.</para>
+
+<para>This correspondence applies to all languages,
+both left-to-right and right-to-left writing modes.</para>
+
+<para>The default value of this parameter is zero. If you enlarge this extent,
+be sure to also enlarge the <parameter>body.margin.inner</parameter>
+parameter to make room for its content, otherwise any text in
+the side region may overlap with the body text.</para>
+
+</refsection>
+</refentry>
--- /dev/null
+<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="region.outer.extent">
+<refmeta>
+<refentrytitle>region.outer.extent</refentrytitle>
+<refmiscinfo class="other" otherclass="datatype">length</refmiscinfo>
+</refmeta>
+<refnamediv>
+<refname>region.outer.extent</refname>
+<refpurpose>Specifies the width of the outer side region</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+<src:fragment xml:id="region.outer.extent.frag">
+<xsl:param name="region.outer.extent">0.4in</xsl:param>
+</src:fragment>
+</refsynopsisdiv>
+
+<refsection><info><title>Description</title></info>
+
+<para>The region outer extent is the width of the optional
+text area next to the outer side (opposite the binding side) of the
+body region. </para>
+
+<para>For double-sided output, this side region
+is <literal>fo:region-end</literal> on a odd-numbered page,
+and <literal>fo:region-start</literal> on an even-numbered page.</para>
+
+<para>For single-sided output, this side region
+is <literal>fo:region-end</literal> for all pages.</para>
+
+<para>This correspondence applies to all languages,
+both left-to-right and right-to-left writing modes.</para>
+
+<para>The default value of this parameter is zero. If you enlarge this extent,
+be sure to also enlarge the <parameter>body.margin.outer</parameter>
+parameter to make room for its content, otherwise any text in
+the side region may overlap with the body text.</para>
+
+</refsection>
+</refentry>