graph 1.000 1.000 1.500
node routine1  0.500 1.250 1.013 0.500 routine1 solid ellipse black lightgrey
node routine2  0.500 0.250 1.013 0.500 routine2 solid ellipse black lightgrey
edge routine1 routine2 4 0.500 1.000 0.500 0.889 0.500 0.764 0.500 0.639 solid black
 solid black
stop
