====== Deprecated Options ======
----
**limit**
>former option is now mandatory! Use limiting constraints to restrain gauge
>invariance of EAM potentials. An additional term is added to the sum of squares,
>if one of "electron densities" within one configuration lies outside the domain
>of the embedding functions.
>This option has been removed from potfit.
**newscale**
>An additional set of potential plotting files and imd potential files is written to disk.
>The file names are formed by appending ''_new'' to the original file names. Those potentials
>are rescaled to a more common variety of the gauge degree of freedom with eam potentials:
>The gradient of the embedding function is zero at the global mean electron density (averaged
>over all atoms in all configurations).
>This option has been removed from potfit.
**noresc**
>Suppresses rescaling of the potential. Useful if close to the minimum and a rescaling would
>ruin the minimization.
>This option has been replaced by the resc option.
**parab**
>Use parabolic interpolation with the embedding functions. Will only work, if embedding
>functions are given at exactly three sampling points. Parabolas allow for extrapolation,
>which can be useful if you are far from the minimum.
>This option has been removed from potfit.
**wzero**
>Forces a tabulated embedding function to be zero at density zero.
>This option has been removed from potfit.