calcul posit comment base st target param diagram diagram work param target object element comment param note fig fig comment posit place point calcul locat argo diagram diagram object target fig note fig point point point po po target point fig elem fig diagram present target elem fig point elem fig fig edg model element elem fig fig edg model element elem fig edg port elem fig fig node todo need better algorithm point elem fig elem fig width distanc point elem fig todo depend project browser altern rectangl draw area project browser instanc editor pane bound like follow work instead rectangl draw area global cur editor compon visibl rect point note fig width draw area point elem fig note fig width distanc point point point elem fig point elem fig note fig height distanc point point point elem fig elem fig height distanc point note fig height draw area height point point 