Filter can be used to search some entries within found errors, help to navigate through found items, exclude some entries from fixing and for many more operations.
Filter can be activated either from the toolbar button or via the top menu, Advanced item.
Filter dialog contains several criterias which describe every entry. Any criteria may be enabled by setting the checkbox and entering a filter value into the nearest input box. Filter is applied immediately upon changing any criteria. No OK or Apply buttons. To disable filtering either clear all criteria checkboxes or change the view to another grouping.
For best interaction Filter dialog has adjustable transparency feature. Transparency value is remembered.