scale 0.5
boundary -20.0 -20.0  20.0 20.0

inner_circle 0.7 0.7    0.0 0.0  19.5

closed_polygon 0.7 0.7   1.0   4   5.0 0.0   0.0 5.0  -5.0 0.0   0.0 -5.0 

exclusion_point 0.0 0.0