There is a : " self unsetShape " at the end of edgeFromAssociation: and of other methods such as rawEdgesToAll: ...

Is it necessary ?

Wouldn't it be more natural to have something like : " view shape default " ?

So that we can apply our shape to several edges ?

Well I know that we can do it with edgesFromAssociations: , but I wonder if it's necessary to reset the shape after adding edges.

Regards

Mathieu