You can import a UML diagram as an ontology.
| 1. | From the top level menu select : File -> Import.... |
| 2. | Select Ontology (Other Sources) -> Ontology from UML Diagram and then click on Next: |

The following form appears:

| 3. | Click on Browse... to select an UML file. |
The following form appears:

| 4. | Select a UML file and click on Open. |
The From File field of the wizard is filled out automatically:

| 5. | Click on Finish. |
The ontology is imported to the Ontology Navigator.
For more information on UML, visit the OMG Group Website .