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5.18.1.The Element is used to specify sort order for node-sets
5.18.2.sort order="descending" select="."
5.18.3.sort elements
5.18.4.sort order="descending"
5.18.5.sort data-type="number" order="descending"
5.18.6.sort by name()
5.18.7.sort by attribute: sort select="@joined" data-type="number" order="descending"
5.18.8.Sort by different data types and order
5.18.9.Sort in a for-each loop

5.18.10.Sort by last name than first name
5.18.11.sort select="." data-type="number"
5.18.12.sort select="xs:integer(.)"
5.18.13.sort select="."