Save the downloaded .jar file in the /Userhome/.astah/systemsafety directory.
Relaunch Astah System Safety and start a new project or open an existing one.
The installation is successful if you see the [Rich Document] tab beneath the diagram editor.
How to use
Select a model element in the diagram, then open [Rich Document] tab.
Enter information that you would like to add to the model element – description you would write in the “Definition field” but with custom formatting.
You can always show and edit detailed, formatted text documents in this pane by selecting a model element.
In the original built-in Definition field, what you typed in the Rich Document pane will appear in HTML format. However, editing in HTML format will not apply to the document in the [Rich Document] pane.