Dear Friends How can I input a series of datafiles into the Gambit preprocessor package? Let assume that these datafiles contain 2 columns representing the points of a 2D curvature. There is no text header above the column, and datafiles are available in both *.dat and *.txt extensions. Also the data can be stored in both point and block patterns according to the Tecplot software standard for writing the datafiles. Thanks in advance, Kevin.