IPersistStream
Retrieves the size of the stream needed to save the object. (IPersistStream.GetSizeMax)
Determines whether an object has changed since it was last saved to its stream. (IPersistStream.IsDirty)
Initializes an object from the stream where it was saved previously. (IPersistStream.Load)
Saves an object to the specified stream. (IPersistStream.Save)