scale 5.0
boundary -3 -3   3 3

line     0.9 0.9    0.2    -3.0  3.0    3.0  3.0
line     0.9 0.9    0.2     3.0  3.0    3.0 -3.0
line     0.9 0.9    0.2     3.0 -3.0   -3.0 -3.0
line     0.9 0.9    0.2    -3.0 -3.0   -3.0  3.0

polygon  0.9 0.9    0.1   2  -1  0    1  0
polygon  0.9 0.9    0.1   2   0 -1    0  1

polygon  0.9 0.9    0.1   2   0 -3    0 -2   
polygon  0.9 0.9    0.1   2   0  3    0  2
polygon  0.9 0.9    0.1   2   3  0    2  0
polygon  0.9 0.9    0.1   2  -3  0   -2  0