DataCompositionGroupUseVariant.AdditionalInformation

If specified for a group-column, then one column will be displayed in the resulting table. This column will contain fields, included in selected fields of the given group and available for output to the group-row. At the same time if the group-column has the grouping fields specified, then exception is generated during composing the template.
For a group-row - in similar way, one string is displayed one row, not a column.

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