====== nopunish ======
----

During the force-matching //potfit// uses numerical punishments to fix several gauge degrees of freedom.

If you enable the ''nopunish'' option, these gauge degrees will not be fixed. This will make it a lot harder for the optimization algorithm to find an optimal potential for your system. 
It however might be desirable in some special cases.

For more details please take a look at the respective force file.