> 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
>  
> Contour plot         [cp]
>  
> level and bas 1 -20661.544922
> level and bas 2 -14758.389648
> level and bas 3 -10541.849609
> level and bas 4 -7530.035645
> level and bas 5 -5378.739746
> level and bas 6 -3842.099854
> level and bas 7 -2744.500000
> level and bas 8 -1960.500000
> level and bas 9 -1400.500000
> level and bas 10 -1000.500000
> level and bas 11 1000.500000
> level and bas 12 1400.500000
> level and bas 13 1960.500000
> level and bas 14 2744.500000
> level and bas 15 3842.099854
> level and bas 16 5378.739746
> level and bas 17 7530.035645
> level and bas 18 10541.849609
> level and bas 19 14758.389648
> level and bas 20 20661.544922
>  
> Zoom one region      [zo]
> Restore zoom         [rz]