3.3. How do I change the way the output looks?

For many aspects of a document's appearance, you can control the behavior of the stylesheets by changing parameters.

<xsl:param name="double.sided" select="1"/>
<xsl:param name="page.margin.inner">
  <xsl:choose>
    <xsl:when test="$double.sided != 0">1.25in</xsl:when>
    <xsl:otherwise>1in</xsl:otherwise>
  </xsl:choose>
</xsl:param>
<xsl:param name="page.margin.outer">
  <xsl:choose>
    <xsl:when test="$double.sided != 0">0.75in</xsl:when>
    <xsl:otherwise>1in</xsl:otherwise>
  </xsl:choose>
</xsl:param>

The parameters are described in the documentation that comes with the distribution.