> xeasy
> Contour plot         [cp]
>  
> level and bas 1 -8264.917969
> level and bas 2 -5903.655762
> level and bas 3 -4217.040039
> level and bas 4 -3012.314209
> level and bas 5 -2151.795898
> level and bas 6 -1537.139893
> level and bas 7 -1098.099976
> level and bas 8 -784.500000
> level and bas 9 -560.500000
> level and bas 10 -400.500000
> level and bas 11 400.500000
> level and bas 12 560.500000
> level and bas 13 784.500000
> level and bas 14 1098.099976
> level and bas 15 1537.139893
> level and bas 16 2151.795898
> level and bas 17 3012.314209
> level and bas 18 4217.040039
> level and bas 19 5903.655762
> level and bas 20 8264.917969
>  
> Zoom one region      [zo]
> Contour plot         [cp]
>  
> level and bas 1 -12397.126953
> level and bas 2 -8855.233398
> level and bas 3 -6325.309570
> level and bas 4 -4518.221191
> level and bas 5 -3227.443848
> level and bas 6 -2305.459961
> level and bas 7 -1646.900024
> level and bas 8 -1176.500000
> level and bas 9 -840.500000
> level and bas 10 -600.500000
> level and bas 11 600.500000
> level and bas 12 840.500000
> level and bas 13 1176.500000
> level and bas 14 1646.900024
> level and bas 15 2305.459961
> level and bas 16 3227.443848
> level and bas 17 4518.221191
> level and bas 18 6325.309570
> level and bas 19 8855.233398
> level and bas 20 12397.126953
>  
> Restore zoom         [rz]