sort_descending - Descending sortorder

When the data source refers to a column definition that supports sorting, the option might be set in order to request descending sort order. The option will be ignored for data sources for columns and regions.

The option will be ignored also, when a database sort order is defined for the column (sort_order).

In order to setup an initial order by column, the column number has to be set in the field control (sort_column, Order). In order to achieve a descending order, descending has to be activated in the columns data source.