Move formatting properties for index letter headings to

this attribute-set to support customization.

diff --git a/xsl/params/index.div.title.properties.xml b/xsl/params/index.div.title.properties.xml
new file mode 100644 (file)
index 0000000..598ce7e
--- /dev/null
+++ b/xsl/params/index.div.title.properties.xml
@@ -0,0 +1,29 @@
+<refentry id="index.div.title.properties">
+<refnamediv>
+<refname>index.div.title.properties</refname>
+<refpurpose>Properties associated with the letter headings in an
+index</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+<src:fragment id='index.div.title.properties.frag'>
+<xsl:attribute-set name="index.div.title.properties">
+  <xsl:attribute name="margin-left">0pt</xsl:attribute>
+  <xsl:attribute name="font-size">14.4pt</xsl:attribute>
+  <xsl:attribute name="font-family">{$title.fontset}</xsl:attribute>
+  <xsl:attribute name="font-weight">bold</xsl:attribute>
+  <xsl:attribute name="keep-with-next.within-column">always</xsl:attribute>
+  <xsl:attribute name="space-before.optimum">{$body.font.master}pt</xsl:attribute>
+  <xsl:attribute name="space-before.minimum">{$body.font.master * 0.8}pt</xsl:attribute>
+  <xsl:attribute name="space-before.maximum">{$body.font.master * 1.2}pt</xsl:attribute>
+</xsl:attribute-set>
+</src:fragment>
+</refsynopsisdiv>
+
+<refsect1><title>Description</title>
+
+<para>This attribute set is used on the letter headings that separate
+the divisions in an index.</para>
+
+</refsect1>
+</refentry>