Re: nested grouping problem

I am mystified as to how the<xsl:if test="position()!=1">;</xsl:if>
knows to put the semicolon after every grouped @main item except the
last one.

<xsl:for-each select=....>
<xsl:if test=position()!=1>,</xsl:if>
<foo/>
</xsl:for-each>

<xsl:for-each select=....>
<foo/>
<xsl:if test=position()!=last()>,</xsl:if>
</xsl:for-each>