page.height — The height of the physical page
<xsl:param name="page.height">
<xsl:choose>
<xsl:when test="$page.orientation = 'portrait'">
<xsl:value-of select="$page.height.portrait"></xsl:value-of>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$page.width.portrait"></xsl:value-of>
</xsl:otherwise>
</xsl:choose>
</xsl:param>
The page height is generally calculated from the
paper.type and
page.orientation parameters.