This tab helps you to write descriptions and annotations for the diagram.
To open this dialog window, please, select Diagram | Diagram Properties from the ribbon-menu, or click on the Properties menu item in diagram's popup menu. Then switch to the Notes tab.
Use the bottom tabs to select between the description and annotation of the diagram.
See also:
Diagram: "General" tab | "Default Database Options" tab | "Pages" tab | "Preview" tab | "Statistics" tab