1. I'm trying to modify a potential file and the potential energy is associated with the original coordinates of atoms.The original data is read from *.data file. How can I achieve this? I have checked in compute displace/atom command which use the xorigin to calculate the displacement of atoms, and this commmand achieve this by building a new fix astore class. I think it's a bit compilcated. How can I achieve my purpose in a concise way?