[[File:TypesCleanup-Tool-Options-dialog-addon-example-51.png|thumb|right|450px|Type Cleanup Tool - example window]]

The left pane has the list of various groupings of Types. Any grouping which has custom values will also have the [[image:RightwardsTriangleArrowhead20x20.png]] expansion button at the left. Clicking the button will [[image:DownwardsTriangleArrowhead20x20.png]] expand the submenu to list any existing Custom types. Select one of those custom types and the right pane will show the list of references that utilize the custom type. If the list is empty, the Custom Type can be removed without affecting any records.