So I'm confident that we could remove some of the unused Morphic behavior. :) Morph selectors difference: #(#eventHandler #highlightedForMouseDown #extent: #maybeAddCollapseItemTo: #submorphsBehind:do: #valueOfProperty:ifAbsentPut: #textAnchorType: #isOrthoRectangularMorph #referencePosition #internalizePosition:from: #ownShadowForm #allStringsAfter: #addStandardHaloMenuItemsTo:hand: #colorForInsets #toggleStickiness #initialExtent #addTitleForHaloMenu: #focusKeyboardFor: #submorphInFrontOf: #extent #addHalo #worldBoundsForHalo #initializeExtension #mouseStillDown: #changeDocumentAnchor #drawMouseDownHighlightOn: #position: #sticky: #changeInlineAnchor #shouldDropOnMouseUp #defaultBalloonColor #extension #beSticky #resizeFromMenu #keyDown: #invokeMetaMenuAt:event: #removedMorph: #fullDrawOn: #balloonText #right #drawDropHighlightOn: #flash #mouseLeave: #submorphCount #addCopyItemsTo: #shouldGetStepsFrom: #okayToRotateEasily #blueButtonUp: #wantsToBeDroppedInto: #dropEnabled: #top #valueOfProperty:ifPresentDo: #initialize #startDrag: #relativeTextAnchorPosition: #morphsAt: #balloonHelpAligner #findA: #center: #nameForFindWindowFeature #drawingFailsNot #startDrag:with: #resistsRemovalString #okayToBrownDragEasily #addFillStyleMenuItems:hand: #addToggleItemsToHaloMenu: #handleMouseLeave: #addMorphInLayer: #userString #maybeDuplicateMorph #hasParagraphAnchorString #maybeDuplicateMorph: #click #veryLastLeave #handleUnknownEvent: #position #firstSubmorph #addAlarm:withArguments:at: #mouseEnter: #altSpecialCursor3 #layoutFrame: #duplicate #changeDragAndDrop #defaultLabelForInspector #privateExtension: #comeToFrontAndAddHalo #submorphsReverseDo: #halo #highlight #previousMorph #basicExtent: #resetHighlightForDrop #unlockContents #doesLayout #allMorphsDo: #altSpecialCursor3: #isWorldMorph #handleEvent: #dismissViaHalo #relativeTextAnchorPosition #balloonFont #resumeAfterDrawError #defaultBalloonFont #click: #replaceSubmorph:by: #handlerForBlueButtonDown: #internalizeScalar:from: #activateWindow #highlightForDrop: #shadowColor: #findSubmorphBinary: #addTextAnchorMenuItems:hand: #assureExtension #rotationDegrees #resetExtension #potentialEmbeddingTargets #firstOwnerSuchThat: #addHaloActionsTo: #addCustomMenuItems:hand: #doubleClick: #color #aboutToBeGrabbedBy: #processEvent: #invalidRect: #nearestOwnerThat: #hasDocumentAnchorString #bounds:in: #drawOn: #balloonColor #rightCenter #shadowForm #handleFocusEvent: #dropEnabled #formerPosition: #buildMetaMenu: #toggleResistsRemoval #cursor #containsPoint:event: #stopStepping #justDroppedInto:event: #balloonHelpDelayTime #bottomCenter #ownerChain #comeToFront #lock #addAllMorphs:after: #collapse #shadowColor #visible #mouseStillDownThreshold #handleKeyUp: #exportAsPNG #inATwoWayScrollPane #ownerThatIsA: #morphsAt:unlocked:do: #withAllOwnersDo: #handlesMouseDown: #privateMoveBy: #addAlarm:with:with:after: #privateFullMoveBy: #repelsMorph:event: #privateOwner: #okayToDuplicate #containingWindow #startStepping #fillStyle: #altSpecialCursor2 #bounds: #removeHalo #mouseLeaveDragging: #submorphThat:ifNone: #duplicateMorph: #highlightColor #editBalloonHelpContent: #rotationDegrees: #removeAllMorphsIn: #handlesMouseOver: #externalizeScalar:to: #startStepping:at:arguments:stepTime: #isInWorld #handlerForMetaMenu: #topCenter #morphsInFrontOf:overlapping:do: #privateColor: #addWorldHandlesTo:box: #handlesKeyboard #lastSubmorph #copyToPasteBuffer: #arrangeToStartSteppingIn: #transferHalo:from: #activeHand #fullBounds #rejectDropMorphEvent: #menuButtonMouseLeave: #leftCenter #justGrabbedFrom: #highlightForDrop #addHalo:from: #submorphsSatisfying: #enableDragNDrop: #privateBounds: #insetColor #on:send:to: #addMorphInFrontOfLayer: #changeColor #okayToResizeEasily #mouseDownOnHelpHandle: #imageForm #width #clipsSubmorphs #separateDragAndDrop #isSticky #morphicLayerNumber #handlesMouseStillDown: #lock: #colorString: #menuButtonMouseEnter: #left: #align:with: #buildHandleMenu: #bottomLeft #textAnchorType #drawSubmorphsOn: #doesBevels #alarmScheduler #wantsDroppedMorph:event: #findDeepSubmorphThat:ifAbsent: #hasModel #addOptionalHandlesTo:box: #nextMorphPart2 #highlightForMouseDown: #addMorph:inFrontOf: #morphicLayerNumberWithin: #isOpaqueMorph #isPlayfieldLike #addAlarm:with:with:at: #enableDrop: #hasSubmorphs #enableDragNDrop #keyStroke: #veryDeepInner: #minimumExtent #openInWorld: #deepCopy #handlesMouseOverDragging: #addMorphBack: #stepAt: #altSpecialCursor1 #mouseStillDownStepRate #privateAddMorph:atIndex: #lockUnlockMorph #externalizePosition:to: #privateAddAllMorphs:atIndex: #hasKeyboardFocus #topLeft #highlightForMouseDown #top: #handleMouseMove: #on:send:to:withValue: #removeProperty: #addAlarm:withArguments:after: #height #setConstrainedPosition:hangOut: #goBehind #fullReleaseCachedState #asMorph #addMorphFront: #rejectsEvent: #prepareToBeSaved #hasOwner: #copy #setProperty:toValue: #resumeAfterStepError #addedMorph: #allMorphs #addMorphCentered: #slideBackToFormerSituation: #doLayoutIfNeeded #mouseUp: #removeAllMorphs #fillStyle #veryDeepCopyWith: #externalizePositionToWorld: #addAlarm:at: #privateRemove: #addHandlesTo:box: #displayBounds #bottomRight #grabMorph: #openInHand #changeColorTarget:selector:originalColor:hand: #stopSteppingSelector: #openCenteredInWorld #handleDropMorph: #acceptDroppingMorph:event: #invalidRect:from: #submorphsDo: #layoutBounds #storeDataOn: #arrangeToStartStepping #outermostWorldMorph #owner #wantsSteps #drawingFails #visible: #lockedString #showBalloon:hand: #handleMouseDown: #formerOwner #addDebuggingItemsTo:hand: #addHalo: #internalizePositionFromWorld: #clipText #handleMouseUp: #wantsHaloFromClick #unlock #keyboardFocusChange: #hasProperty: #mouseEnterDragging: #world #borderWidth #resizeMorph: #height: #beTransparent #morphsAt:unlocked: #fullContainsPoint: #privateDelete #imageForm:forRectangle: #containsPoint: #deleteBalloon #raisedColor #allOwners #wantsBalloon #bottom #addAlarm:with:after: #handleMouseOver: #exportAsJPEG #dismissMorph: #altSpecialCursor0 #stepTime #actionMap #addAlarm:with:at: #is: #embeddedInMorphicWindowLabeled: #addMorphFrontFromWorldPosition: #addBorderStyleMenuItems:hand: #mouseMove: #defaultBounds #hide #hasDragAndDropEnabledString #layoutInBounds: #left #setBalloonText:maxLineLength: #editBalloonHelpText #bounds #handleKeyDown: #cursorPoint #unlockOneSubpart #areasRemainingToFill: #startSteppingSelector: #pasteUpMorph #wantsRecolorHandle #positionInWorld #setBalloonText: #handleKeystroke: #externalizePositionFromOwner:to: #doubleClickTimeout: #submorphs #hasInlineAnchorString #referencePosition: #submorphsInFrontOf:do: #width: #suspendEventHandler #isLocked #mouseDownPriority #right: #layoutProportionallyIn: #removeMorph: #hasExtension #privateInvalidateMorph: #addAlarm:after: #handleMouseEnter: #inspectInMorphic: #activateWindowAndSendTopToBack: #noteNewOwner: #balloonHelpTextForHandle: #hasClipSubmorphsString #haloClass #addAddHandMenuItemsForHalo:hand: #innerBounds #layoutFrame #mouseDown: #formerOwner: #removeAlarm: #changed #handlerForMouseDown: #nextMorph #center #inspectAt:event: #showActions #layoutBounds: #formerPosition #vanishAfterSlidingTo:event: #addSimpleHandlesTo:box: #changeParagraphAnchor #defaultColor #show #addMorph:layoutFractions: #invokeMetaMenu: #externalizeVector:to: #adoptPaneColor: #enableDrag: #primaryHand #step #topRight #delete #dragEnabled: #updateableActionMap #handleListenEvent: #blueButtonDown: #isKnownFailing #submorphBehind: #addMorphFront:fromWorldPosition: #buildDebugMenu: #addMorph:behind: #intoWorld: #addEmbeddingMenuItemsTo:hand: #printOn: #valueOfProperty:ifAbsent: #fullDisplayBounds #valueOfProperty: #inspectOwnerChain #computeFullBounds #openInWorld #drawErrorOn: #internalizeVector:from: #releaseActionMap #rejectDropEvent: #canDrawBorder: #layoutChanged #stickinessString #bottom: #defaultEventDispatcher #doLayoutIn: #noHelpString #objectForDataStream: #addMorph: #setExtentFromHalo: #refreshWorld #addExportMenuItems:hand: #resistsRemoval #color: #start #exportAsBMP #addAllMorphs: #submorphBounds #clipSubmorphs: #releaseCachedState #duplicateMorphCollection: #keyUp: #allOwnersDo: #addMorph:fullFrame: #veryDeepFixupWith: #processEvent:using: #root #dropHighlightColor #clippingBounds #showBalloon: #dragNDropEnabled #internalizePositionToOwner:from: #handleMouseStillDown: #otherProperties #morphsAt:behind:unlocked: #highlightedForDrop #wantsHaloHandleWithSelector:inHalo: #addCustomHaloMenuItems:hand: #dragEnabled #changeClipSubmorphs #eventHandler:) #(#morphsInFrontOverlapping:do: #mouseWheel: #vResizing: #balloonFont: #removeFlexShell #dockingBars #overlapsShadowForm:bounds: #focusBounds #navigateFocusForward #shadowOffsetRectangle #handlesMouseWheel: #actWhen #isFlexed #point:from: #actWhen: #wrapCentering: #defaultBitmapFillForm #handleWindowEvent: #embedInWindow #disableTableLayout: #vResizeToFit: #keepsTransform #wrapCentering #doButtonAction #addTransparentSpacerOfSize: #handleDropFiles: #wouldAcceptKeyboardFocus #changeShadowColor #changeDisableTableLayout #cellSpacingString: #focusIndicatorCornerRadius #iconOrThumbnail #changeDirectionHandles #listDirection #hasNoLayoutString #lastSubmorphRecursive #assureTableProperties #cellSpacing: #toggleVisible #isLineMorph #wantsKeyboardFocusNavigation #changeLayoutInset: #addDropShadow #couldHaveRoundedCorners #screenLocation #renameTo: #useBitmapFill #taskbarThumbnail #pointFromWorld: #submorphWithProperty: #visibleClearArea #preferredButtonCornerStyle #handlesDropShadowInHand #handleMouseWheel: #shadowOffset #wrapDirectionString: #hasHalo #wantsYellowButtonMenu: #setNameTo: #hasRubberBandCellsString #buildYellowButtonMenu: #rotationCenter #viewBox #focusColor #roundedCorners: #borderWidth: #boundsInWorld #cellInset #changeMinCellSize: #minWidth #borderColor #reverseTableCells #referencePositionInWorld: #adjustedCenter #saveOnFile #boundingBoxOfSubmorphs #hasDropShadowString #useSolidFill #listSpacing #cornerStyle: #topPasteUp #addMyYellowButtonMenuItemsToSubmorphMenus #potentialTargets #allMorphsInto: #fullBoundsInWorld #enabled #transformedBy: #taskbarTask #changeMaxCellSize: #isAlignmentMorph #toggleVisibleAndRaise #wantsHaloFor: #nameForUndoWording #startSteppingIn: #yellowButtonActivity: #isDockingBar #changeProportionalLayout #isSteppingSelector: #transformFrom: #listCentering #snapToEdgeIfAppropriate #setArrowheads #wrapDirection #addMiscExtrasTo: #focusChanged #layoutProperties: #topRight: #borderStyleForSymbol: #hasTranslucentColor #renderedMorph #theme: #clipLayoutCells #hasDisableTableLayoutString #takesKeyboardFocus #isWorldOrHandMorph #previousMorphInWindow #bottomLeft: #boundsForBalloon #name: #hasFocus #goHome #listDirection: #windowEvent: #wantsDropFiles: #iconOrThumbnailOfSize: #localPointToGlobal: #hasRolloverBorder: #mouseUpCodeOrNil #setShadowOffset: #deleteDockingBars #topRendererOrSelf #highlightColor: #cellSpacing #isMorph #postLoad #toggleDropShadow #handlesKeyboard: #point:in: #dropFiles: #setToAdhereToEdge: #setRotationCenter #changeTableLayout #transformFromOutermostWorld #rootMorphsAt: #moveOrResizeFromKeystroke: #adjustLayoutBounds #undoMove:redo:owner:bounds:predecessor: #borderStyle #roundedCorners #canHaveFillStyles #removeMouseUpAction #doesOwnRotation #changeClipLayoutCells #initialColorInSystemWindow: #window #drawKeyboardFocusOn: #defaultTaskbarThumbnailExtent #hasReverseCellsString #optimalExtent #globalPointToLocal: #myDependents #addTableLayoutMenuItems:hand: #outermostMorphThat: #openInWindowLabeled: #preferredDuplicationHandleSelector #submorphNamed: #adhereToEdge #roundedCornersString #rubberBandCells #deleteAnyMouseActionIndicators #becomeModal #hasYellowButtonMenu #isStepping #nextMorphInWindow #boundsWithinCorners #minCellSize #griddedPoint: #permitsThumbnailing #grabTransform #addMagicHaloFor: #addCellLayoutMenuItems:hand: #clearArea #isFullOnScreen #worldBounds #flashBounds #taskThumbnailOfSize: #addMorph:asElementNumber: #referencePositionInWorld #stopSteppingSelfAndSubmorphs #beUnsticky #exportAsGIF #hasDirectionHandlesString #vResizingString: #myDependents: #bottomRight: #intersects: #paneColor: #minWidth: #paneColor #programmedMouseLeave:for: #transferStateToRenderer: #hasProportionalLayoutString #drawDropShadowOn: #wrapDirection: #cellPositioning #nextMorphWantingFocus #removeDropShadow #restoreSuspendedEventHandler #minExtent #tempCommand #prepareForScaling #useGradientFill #addLayoutMenuItems:hand: #addMouseUpActionWith: #taskbarThumbnailExtent #okayToAddDismissHandle #passivate #submorphIndexOf: #addModelYellowButtonItemsTo:event: #navigateFocusBackward #rotationCenter: #resistsRemoval: #paneColorOrNil #balloonColor: #hasDropShadow: #rubberBandCells: #borderStyle: #boundsIn: #layoutPolicy: #borderWidthForRounding #abandon #expandFullBoundsForDropShadow: #simplySetVisible: #shadowOffset: #toggleCornerRounding #dialogWindow #wantsKeyboardFocus #toggleLocked #focusIndicatorMorph #wantsDirectionHandles: #tabKey: #reverseTableCells: #dismissMorph #setBorderStyle: #disableDragNDrop #gridPoint: #drawOnCanvas: #isHandMorph #minHeight #assureLayoutProperties #scale: #adoptPaneColor #spaceFillWeight #topLeft: #adjustedCenter: #mainDockingBars #submorphBefore #cellPositioningString: #printStructureOn:indent: #minHeight: #privateSubmorphs: #fullCopy #changeRubberBandCells #hasDropShadow #pointInWorld: #clipLayoutCells: #colorChangedForSubmorph: #minimumExtent: #programmedMouseEnter:for: #shadowPoint: #hasClipLayoutCellsString #commandHistory #changeNoLayout #submorphNamed:ifNone: #submorphAfter #themeChanged #exploreViewHierarchy #tabAmongFields #hResizing #transparentSpacerOfSize: #target: #wouldAcceptKeyboardFocusUponTab #modalUnlockFrom: #hResizing: #hasHalo: #positionSubmorphs #changeListDirection: #addMorph:after: #addMouseUpAction #wantsRoundedCorners #wantsYellowButtonMenu #addMouseActionIndicatorsWidth:color: #toggleDragNDrop #privateFullBounds #wantsToBeTopmost #changeReverseCells #listCentering: #modalLockTo: #openInWindowLabeled:inWorld: #isTextMorph #programmedMouseDown:for: #drawRolloverBorderOn: #layoutMenuPropertyString:from: #fullPrintOn: #stop #cellPositioning: #adhereToEdge: #cmdGesturesEnabled #outOfWorld: #wantsDirectionHandles #outerBounds #theme #minCellSize: #expandFullBoundsForRolloverBorder: #useDefaultFill #takeKeyboardFocus #activate #listCenteringString: #morphsInFrontOverlapping: #isTaskbar #isShared #taskbarButtonFor: #copyWithoutSubmorph: #defersHaloOnClickTo: #spaceFillWeight: #wantsToBeCachedByHand #nextMorphAcrossInWindow #clipSubmorphs #layoutInset #setRotationCenterFrom: #imageFormForRectangle: #isInDockingBar #changeCellInset: #preferredKeyboardBounds #preferredCornerStyle #taskbars #withAllOwners #menuKeyboardControl #listDirectionString: #isBalloonHelp #programmedMouseUp:for: #fillWithRamp:oriented: #vResizing #hasRolloverBorder #layoutPolicy #openModal: #removeLink: #firedMouseUpCode #ownerChanged #preferredKeyboardPosition #listSpacingString: #doCancel #morphPreceding: #privateFullBounds: #asDraggableMorph #listSpacing: #wrapCenteringString: #allNonSubmorphMorphs #addNestedYellowButtonItemsTo:event: #openInWindow #isRenderer #bounds:from: #hasTableLayoutString #defineTempCommand #potentialTargetsAt: #externalName #selectedObject #tabHitWithEvent: #privateSubmorphs #scaleFactor #navigationKey: #balloonHelpEnabled #hResizingString: #setNamePropertyTo: #maxCellSize #addFlexShell #addDropShadowMenuItems:hand: #presentHelp #layoutProperties #degreesOfFlex #setProperties: #model #outermostOwnerWithYellowButtonMenu #disableTableLayout #imageForm:backgroundColor:forRectangle: #handlerForYellowButtonDown: #screenRectangle #cornerStyle #findDeeplyA: #addYellowButtonMenuItemsTo:event: #targetWith: #transformFromWorld #dragSelectionColor #modelOrNil #undoGrabCommand #isInSystemWindow #imageFormDepth: #setCenteredBalloonText: #icon #previousMorphWantingFocus #shiftSubmorphsOtherThan:by: #cellInset: #transformedFrom: #maxCellSize: #pasteUpMorphHandlingTabAmongFields #isFlexMorph #layoutInset: #defaultYellowButtonMenuEnabled #borderColor: #wantsKeyboardFocusFor: #newTransformationMorph)