The cfgscale script scales a .cfg file, moving the nuclei and electrons further apart, but keeping the electron sizes fixed:
cfgscale [*.cfg] [factor_x] [factor_y] [factor_z]
The cfgtrans script translates a .cfg file by the specified vector while respecting periodic boundaries (nuclei and electrons are wrapped around):
cfgtrans [*.cfg] [dx] [dy] [dz]
The cfgrepeat script repeats a periodic .cfg file nx/ny/nz times to create a periodic supercell:
cfgrepeat [*.cfg] [nx] [ny] [nz]