anchor.diff:      { list_to_integer, 2 },
       { list_to_pid, 1 },
       { list_to_tuple, 1 },
  -    { load_module, 2 },
       { make_ref, 0 },
       { max, 2 },
       { min, 2 },
  -    { module_loaded, 1 },
       { monitor_node, 2 },
       { node, 0 },
       { node, 1 },
  
positive.code:     { nodes, 1 },
      { now, 0 },
      { pid_to_list, 1 },
      { pre_loaded, 0 },
      { purge_module, 1 },
      { round, 1 },
      { self, 0 },
      { setelement, 3 },
  
negative.code:     { bit_size, 1 },
      { bitstring_to_list, 1 },
      { byte_size, 1 },
      { date, 0 },
      { disconnect_node, 1 },
      { element, 2 },
      { exit, 1 },
  