Astah User's Guide
"Property View" is a pane that is located on the left-bottom of Astah Window where you configure detailed settings for diagrams and models.
To show property of the project, click a root package in the tree view.
There are three tabs for Project's property.
You can add icon associated with stereotype and switch the notation of models with the stereotype on diagrams.
You can set diagram styles per project.
You can import the style setting that Astah has to a currently-opened project.
You can change the font style.
You can set programming languages for the projects you are going to make.
[Version History] tab shows a list of Edition and its model version the project has been edited with.
Diagram Properties varies depending on the diagram type. As a sample, this section will show you the property of Class diagram.
You can show/edit TaggedValue.
You can add/edit hyperlinks to diagrams.
You can show/hide items on the currently-opened diagram. Default visibility setting can be done in the System Properties.