anchor.diff:    }
   
     var model_widgets = [];
  +  var relationship_widgets = [];
   
     $('.model').click(function(ev) {
       console.log('Adding model with id ' + $(ev.target).attr('data-model-id'));
  
positive.code:       };
        model_widget.graphic[0].data('set', model_widget.graphic)
        model_widget.graphic[0].drag(move, start);
  
        model_widgets.push(model_widget);
      });
  
negative.code:           r.text(60 + 30, 40 + 20, model.name)
          )
        };
        model_widget.graphic[0].data('set', model_widget.graphic)
        model_widget.graphic[0].drag(move, start);
        addRelationships(model_widget);
  
        model_widgets.push(model_widget);
      }
  