> xeasy
> Goto plane           [gp]
> Goto plane           [gp]
> Forward plane        [fp]
> Forward plane        [fp]
> Backward plane       [bp]
> Contour plot         [cp]
> Zoom one region      [zo]
> Enlarge horizontally [eh]
> Enlarge horizontally [eh]
> Enlarge vertically   [ev]
> Zoom one region      [zo]
> Enlarge horizontally [eh]
> Enlarge horizontally [eh]