You can type in the Note box any comment concerning your diagram. Note is useful for writing various comments, such as object functionality or role description, things to do, etc in your diagram.
The following picture demonstrates a sample Note:
Placing Note to the diagram
To place a note in the diagram, select the Note tool () from the Palette toolbar. Then click anywhere in the diagram. Certainly, you can place multiple notes in one diagram.
Modify the text in Note
To modify the information, that is displayed in Note, double click on it. Then the following Note editor will appear:
In the drop-down menu select the color that you want to use for the background in your note. Enter the text you want to be shown inside the Note object in the diagram.