are included in running headers or footers.
<!ENTITY list.item.spacing SYSTEM "../params/list.item.spacing.xml">
<!ENTITY make.single.year.ranges SYSTEM "../params/make.single.year.ranges.xml">
<!ENTITY make.year.ranges SYSTEM "../params/make.year.ranges.xml">
+<!ENTITY marker.section.level SYSTEM "../params/marker.section.level.xml">
<!ENTITY monospace.font.family SYSTEM "../params/monospace.font.family.xml">
<!ENTITY monospace.verbatim.properties SYSTEM "../params/monospace.verbatim.properties.xml">
<!ENTITY nominal.table.width SYSTEM "../params/nominal.table.width.xml">
&footer.rule;
&header.content.properties;
&footer.content.properties;
+&marker.section.level;
</reference>
<reference><title>Font Families</title>
<src:fragref linkend="make.index.markup.frag"/>
<src:fragref linkend="make.single.year.ranges.frag"/>
<src:fragref linkend="make.year.ranges.frag"/>
+<src:fragref linkend="marker.section.level.frag"/>
<src:fragref linkend="menuchoice.menu.separator.frag"/>
<src:fragref linkend="menuchoice.separator.frag"/>
<src:fragref linkend="monospace.font.family.frag"/>