<stx:transform version="1.0"
xmlns:stx="http://stx.sourceforge.net/2002/ns"
strip-space="yes" pass-through="none">
<stx:template match="/root">
<a>
<stx:process-children/>
</a>
</stx:template>
<stx:template match="node[1]">
<n>
<stx:process-siblings until="node[@a1]"/>
</n>
</stx:template>
<stx:template match="node">
<s>
<stx:value-of select="position()"/>
</s>
</stx:template>
</stx:transform>