a tool can be registered to appear in a flap Flaps registerQuad: #(FileList2 openMorphicViewInWorld 'Enhanced File List''A nicer File List.')forFlapNamed: 'Tools'.Flaps replaceToolsFlap two lines:Flaps unregisterQuadsWithReceiver: FileList2 fromFlapNamed:'Tools'.Flaps replaceToolsFlap Note: after registering or unregistering, the flap need to bemanually recreated see Flaps classreplace*Flap methods