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Multi-Level Sort window
Click Add to add a new sort level.
Click Delete to delete the selected sort level(s).
Click Up to move the selected sort level(s) up one row.
Click Down to move the selected sort level(s) down one row.
Click OK to accept the changes and close the window. Click Cancel to discard the changes.
Note If you just want to sort by a single column, you can just click the appropriate column header (click it again to reverse the sort direction).