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On 28/02/2014 20:44, russurquhart1@xxxxxxxxxxx wrote:
<xsl:for-each select="//errata_section >> [generate-id(.)=generate-id(key('module-index',module_impacted[1])]">
>> <xsl:sort select="module_impacted"/>So, to my next question, as that is trying to find all the unique module_impacted elements well more exactly it is finding the sets of errata_section elements that have the same value for their first module_impacted element, and returning the first errata_section in each group. module_impacted elements that are not the first child of an errata_section are not considered for the grouping (although probably accidentally they are in the sort) David
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