Conditionals: <xsl:if>

• We need to ask questions before creating elements
• e.g. Only build a Table of Figures if there are figures:

  <xsl:if test=".//figure"><H1>Table of Figures</H1>
  	<UL>
  	<xsl:for-each match=".//figure">
  		<LI><xsl:process-children/></LI>
  	</xsl:for-each>
  	</UL>
  </xsl:if>