The depth of the STRUC elements is arbitrary.
If you know there is a resonable limit to the recusion depth you could do the
following:
<xsl:sort select="number(concat(@pos, '.', STRUCT/@pos, STRUCT/STRUCT/@pos,
STRUCT/STRUCT/STRUCT/@pos, ...)" data-type="number" />
Otherwise I would suggest a multistep process or refering to extensions..
HTH,
Geert
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