| Class | Description | |
|---|---|---|
 | AnnotationCommentCollectionUndoAction | Represents an indo action that stores information about changes in AnnotationReplyCollection object. |
| AnnotationCommentCollectionUndoMonitor | Represents an undo monitor that monitors the AnnotationReplyCollection object and adds undo action to an undo manager if AnnotationReplyCollection is changed. |
| AnnotationCommentUndoMonitor | Represents an undo monitor that monitors the AnnotationComment object and adds undo action to an undo manager if AnnotationComment is changed. |