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You can specify an attribute that should be used for sorting the locations ( in this very particular locationSet only!) in the user interface. This is useful for list locations in for example a logical river order (upstream to downstream). The attribute should then contain a numbering. Note that the attributes are ordered as strings, so use 00001 instead of 1. Each location can only have 1 attribute which defines the sorting, this will automatically be the first defined in locationSets.xml. Sorting of locations with different sorting attibutes will result in grouping locations with the same sorting attibute together.
Option is available since 2014.01
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