add TOCs on chunked pages, by sections refs #3193

this only adds the docbook directive, the sections and anchors
themselves must be provided by local page edits as described
in the issue.

refs #3193

xsl/html-chunked.xsl

@@ -41,6 +41,9 @@
 <!-- toc 2 deep -->
 <xsl:param name="toc.section.depth">2</xsl:param>
 
+<!-- section toc 2 deep -->
+<xsl:param name="generate.section.toc.level">2</xsl:param>
+
 <!-- section numbering -->
 <xsl:param name="section.autolabel">1</xsl:param>
 <xsl:param name="section.label.includes.component.label">1</xsl:param>