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Sub-totals can created easily by setting the totalBreak property against any column for which a change in value should trigger the creation of sub-totals. The Report is automatically ordered by those columns for which the totalBreak property has been set. totalBreak columns can be hidden if their values are not required in the report. Totals are created for each column for which the aggregate property set. The clearDuplicateValue property is used to clear duplicate values for some of the columns to enhance the clarity of the grid data.