In the Property view for elements, you can edit the description field. The description field displays the description of the selected element (for example, class description) for source-generating diagram elements. When editing the text in the description field, the source code updates when you return to the diagram.
Use the description field to create and edit comments for elements that do not generate code (including non-class diagrams).
Use the Javadoc properties to enter the values of Javadoc tags for the source code comments.