SurGe is a computer program which enables to generate surface as an interpolation (approximation) function of two independent variables. The program has the following basic features:> Implements an interpolation / approximation method called ABOS.> Basic input is a simple ASCII file containing  X, Y and  Z coordinates of points irregularly spaced in some region.> The surface can be defined not only by points, but also by spatial (three-dimensional) polylines.> So called fault lines can define discontinuity in generated surface.> Generated surface can pass through points exactly or can be approximative.> Smoothness of resulting surface can be controlled by one parameter.> Large data sets (with noise) can be effectively filtered.> Quality of resulting surface is comparable with surface created by Kriging or Minimum curvature method.