The Diagram Elements toolbar always displays Note and Note Link buttons that place. Notes and Note Links on the diagram. Notes can be free floating, or you can draw a Note Link to some other element to show that a Note pertains specifically to it.
Notes are automatically included when you generate HTML documentation. The text of Notes linked to Class diagram elements does not appear in source code. Use the Doc tab of the Class Inspector to enter source code comments, or enter them directly in your code using the Editor pane.
The Doc tab of the element Inspectors displays source code comments for source-generating diagram elements. If you edit the comments in this tab, source code updates when you click Apply or return to the diagram.
You can also use this tab to create and edit comments for elements that do not generate code (including non-class diagrams). These comments are stored with other diagram-specific information by Together.
The doc tab has two modes: plain text and Browser. In text mode (the default) you can enter either plain text or text plus HTML formatting tags. In Text mode you can view and edit comments as plain text. If the comments contain HTML formatting code, you can click the View as HTML button in this tab to switch to browser mode and see the comments the the HTML formatting.