Tests can be filtered by the Status Reason or the Run Comment of their last execution. Requirements can be filtered by the Status Reason or the Run Comment of their assigned tests. These filtering criteria can be used also when creating reports.
When creating or editing a filter or a report, there is a NOT checkbox which can be used to negate the logic of the filter. This will be applied to the properties operators and to the AND/OR logic. The checkbox will also negate the logic of the nested filters.