4.0             # mass
-20.0 20.0 1999 # xMin xMax nPoint
1 10            # first and last eigenvalue to include in the output
cspline         # interpolation type
5               # nr. of interpolation points and xy declarations
-20.0 35.0
-10.0 0.0
0.0 2.0
10.0 0.0
20.0 35.0