NWPW Lattice Units?


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Hello all,

For the simulation_cell parameter in the NWPW module, what are the units of the lattice command:

""""""""""""""""""""
NWPW
  simulation_cell
lattice
lat_a 27.3254
lat_b 27.3254
lat_c 47.2432
alpha 90.0
beta 90.0
gamma 90.0
end
end

  xc lda
cutoff 15.0
lmbfgs
end
"""""""""""""""""

Is lat_a, lat_b and lat_c in atomic units or angstroms?

Thanks,
Stacey