Shallow water 
1
100.
1,20
5,5
1
50.
200.,0.,0.
      0.0000   1500.
    100.0      1500.
    200.0      1490.     
200.0,2.0,0.0
    0.0        1500.
  200.0        1800.
2.,0.1,1800.0
0.,0.
MODES,PLT
XAXIS -0.1,0.1,20.,0.05
YAXIS 0.,400.,12.5,50.
@EOF