Gets the reference to the cell containing the comment.
A String value that specifies a reference to the commented cell.
The Reference property value is always a reference to a single cell, since comments can only be associated with an individual cell. Even if you create a comment via the CommentCollection.Add method with the cell range passed as a parameter, the comment will be added to the top-left cell of this range.
Note that the Reference property returns an absolute cell reference.