anchor.diff:          !     wfn_file = filename,
           !     nanalyse = N,
           !     blacs_block_size = block_size,
  -        !     rdm = { ... } -- L-d vector containing the sites to include in subsystem A.
  +        !     rdm = { ... }, -- L-d vector containing the sites to include in subsystem A.
  +        !     sparse_hamil = true/false
           ! }
           ! lanczos = {
           !     neigv = N,
  
positive.code:         !    basis: information about the single-particle basis set of the system.
          ! Out:
          !    fci_in: fci_in_t object containing generic fci/lanczos input options.
  
          use flu_binding, only: flu_State
          use aot_table_module, only: aot_get_val, aot_exists, aot_table_open, aot_table_close
  
negative.code:             call aot_get_val(fci_in%nlanczos_eigv, err, lua_state, fci_table, 'neigv')
              call aot_get_val(fci_in%lanczos_string_len, err, lua_state, fci_table, 'nbasis')
              call aot_get_val(fci_in%direct_lanczos, err, lua_state, fci_table, 'direct')
              call aot_get_val(use_sparse_hamil, err, lua_state, fci_table, 'sparse_hamil', default=.true.)
              call aot_table_close(lua_state, fci_table)
          end if
  
  