I'm trying to see the impact of using FOLP card on my simulation results in Feff9. As far as I understand it, FOLP is defining the overlapping of muffin-tin radii. The first parameter defines the the position where this card will be used (expressed as potential type), right? so should I do the simulation for all potentials, that is going from 0 to the last number in my potential list, or I just do it for some specific positions (potential types)? thanks.