10 UMLClass 20 70 190 50 STOCK-EXCHANGE -- location ID1 bg=#dddddd UMLClass 500 70 120 50 COMPANY -- name ID bg=#dddddd UMLClass 210 80 140 30 ticker-symbol bg=#dddddd Relation 340 70 180 50 lt=- m1=1..* m2=0..1 < Is-listed-at 10.0;20.0;160.0;20.0