Graphical Ontology Editing with TopBraid Composer's Diagram Tab
One of the new features in TopBraid Composer 3.6 is the ability to edit RDFS and OWL ontologies in a graphical notation. In the past, the Diagram Tab had been for viewing only. But judging from the number of screenshots all over the web, the Diagram seems to be quite widely used, so it would be a wasted opportunity to not make it editable too. This enhancement hopefully makes TopBraid Composer more accessible to users with UML modeling experience.
I'll walk through a few simple edit operations. The starting point is the kennedys.ttl ontology found in the TopBraid/Examples folder. I have activated the "Human-readable labels" mode with the corresponding button in the tool bar. I have also selected "Start Hierarchy with owl:Thing" in the context menu of the Classes view. In the preferences of the Diagram, I have deactivated "Show root class".
Select the Person class in the tree and switch to the Diagram tab at the bottom of the form. This automatically renders the Person class and its neighbors.
Overall I believe this is a straight-forward feature that will hopefully make it easier for people to quickly design ontologies using an intuitive graphical notation.