&input_pw2bgw
   prefix = 'Zn2O2'
   vxc_flag = .true.
   vxc_file = 'vxc_nlcc.dat'
   vxc_integral = 'g'
   vxc_diag_nmin = 1
   vxc_diag_nmax = 52
   vxc_offdiag_nmin = 0
   vxc_offdiag_nmax = 0
   vxc_zero_rho_core = .false.
/
