Links within drawing artifact

I know I can link individual parts of a diagram to outside artifacts, but is there a way to assign these links a unique ID? I know that DNG can identify them in the background (for instance if I follow the link from an artifact in a separate module to a line in a diagram, the line gets highlighted).

As an example, lets say I create a use case diagram and create a link from the use case to the actor. This links to a user need artifact in a separate module. But if I open the module, the ID of the entire diagram is shown as an attribute. I'd like it to show the ID of the use case.

Alternatively, I'd like to open the diagram and show the user need artifact link on the diagram itself.

Is there an easy way to accomplish both of these requests?