• Registering Undo Operations

• Checking Undo Ability

• Performing Undo and Redo

• Limiting the Undo Stack

• Creating Undo Groups

• Disabling Undo

• Checking Whether Undo or Redo Is Being Performed

• Clearing Undo Operations

• Managing the Action Name

• Getting and Localizing the Menu Item Title

• Working with Run Loops

• beginUndoGrouping

• canRedo

• canUndo

• disableUndoRegistration

• enableUndoRegistration

• endUndoGrouping

• forwardInvocation:

• groupingLevel

• groupsByEvent

• isRedoing

• isUndoing

• isUndoRegistrationEnabled

• levelsOfUndo

• prepareWithInvocationTarget:

• redo

• redoActionName

• redoMenuItemTitle

• redoMenuTitleForUndoActionName:

• registerUndoWithTarget:selector:object:

• removeAllActions

• removeAllActionsWithTarget:

• runLoopModes

• setActionName:

• setGroupsByEvent:

• setLevelsOfUndo:

• setRunLoopModes:

• undo

• undoActionName

• undoMenuItemTitle

• undoMenuTitleForUndoActionName:

• undoNestedGroup

• NSUndoCloseGroupingRunLoopOrdering

• NSUndoManagerCheckpointNotification

• NSUndoManagerDidOpenUndoGroupNotification

• NSUndoManagerDidRedoChangeNotification

• NSUndoManagerDidUndoChangeNotification

• NSUndoManagerWillCloseUndoGroupNotification

• NSUndoManagerWillRedoChangeNotification

• NSUndoManagerWillUndoChangeNotification