</para></listitem>
<listitem><para>The sum of the page-master margin-left and the
region-body margin-left. In DocBook, the region-body margin-left is
-zero by default, so this is simply the page-master region-left.
+zero by default, so this is simply the page-master margin-left.
</para></listitem>
<listitem><para>The sum of the page-master margin-right and the
region-body margin-right. In DocBook, the region-body margin-right is
-zero by default, so this is simply the page-master region-left.
+zero by default, so this is simply the page-master margin-right.
</para></listitem>
</orderedlist>