diff --git a/format-master.xml b/format-master.xml
index 37d8804..fc8aac1 100755
--- a/format-master.xml
+++ b/format-master.xml
@@ -1397,9 +1397,11 @@
 	<!--
 		Sections, subsections, subsubsections, ...
 		
-		@label: A label that can be used for cross referencing. Any
-		value can be used, as long as it's a legal identifier in both
-		LaTeX and HTML.
+		@label: A label that can be used for cross referencing. Any value can be used, as long as it's a legal identifier in both LaTeX and HTML.
+		
+		@number: Whether or not to generate a section number. It makes the most logical sense for this attribute to be associated with the section element, but the section numbers are actually generated in the "section-title" template (see below). Consequently, this attribute isn't even mentioned in this template.
+			'yes'	[default]
+			'no'
 	-->
 	<template name="section" match="section">
 		<common formats="/latex/xelatex/">
@@ -1589,7 +1591,9 @@
 		</common>
 	</template>
 	
-	<!-- Generate section title with nested numbering, e.g., 1.1.3. -->
+	<!--
+		Generate section title with nested numbering, e.g., 1.1.3.
+	-->
 	<template name="section-title" match="section/title">
 		<common formats="/latex/xelatex/">
 			<xsl:param name="label" />
@@ -1601,7 +1605,14 @@
 					<xsl:if test="count(ancestor::section) &gt; 3">3</xsl:if>
 				</xsl:with-param>
 			</xsl:call-template>
-			<xsl:text>section{</xsl:text>
+			<xsl:text>section</xsl:text>
+			<!--
+				Unnumbered section. We reference the @number attribute of the parent section element. (We are guaranteed that the parent is a section element by the match context for this template.)
+			-->
+			<xsl:if test="../@number = 'no'">
+				<xsl:text>*</xsl:text>
+			</xsl:if>
+			<xsl:text>{</xsl:text>
 			<xsl:apply-templates /><xsl:text>}</xsl:text>
 			<xsl:if test="$label != 'THERE_IS_NO_LABEL'">
 				\label{<xsl:value-of select="$label" />}
@@ -1614,8 +1625,13 @@
 				<xsl:if test="1 + count(ancestor::section) &gt; 6">6</xsl:if>
 			</xsl:variable>
 			<xsl:text disable-output-escaping="yes">&lt;h</xsl:text><xsl:number value="$depth" /><xsl:text disable-output-escaping="yes">&gt;</xsl:text>
-			<xsl:number count="section" level="multiple" format="1.1.1.1.1.1" />
-			<xsl:text> </xsl:text>
+			<!--
+				Unnumbered section, as per above. Note that the sense of the test is reversed: with LaTeX we output _additional_ text to get an unnumbered section, where as with HTML, we _suppress_ the additional text (i.e., the section number, which is generated here). We also only count sections that _are_ numbered.
+			-->
+			<xsl:if test="not( ../@number ) or ( ../@number != 'no' )">
+				<xsl:number count="section[not( @number ) or ( @number != 'no' )]" level="multiple" format="1.1.1.1.1.1" />
+				<xsl:text> </xsl:text>
+			</xsl:if>
 			<xsl:apply-templates />
 			<xsl:text disable-output-escaping="yes">&lt;/h</xsl:text><xsl:number value="$depth" /><xsl:text disable-output-escaping="yes">&gt;</xsl:text>
 		</common>