anchor.diff:      end;
   mutation(_, <<>>, []) -> <<>>.
   
  -mutation_fn([_, Mutprob, Mutrate | _]) ->
  +mutation_fn([_, _, Mutprob, Mutrate | _]) ->
       Range_and_stddev = [{L, U, (U-L)/6} || {L, U} <- ?ABCDK_INTERVALS],
       fun (Gtype) ->
               case random:uniform() =< Mutprob of
  
positive.code:         0 -> C = A;
          1 -> C = B
      end,
      crossover_sel(TA, TB, <<Res/binary, C/float>>).
  
  crossover_fn(_) ->
      fun crossover_avg/2.
  
  mutation(P, <<X/float, R/binary>>, [{L, U, Stddev} | T]) ->
      Rmut = mutation(P, R, T),
  
negative.code: 
  -record(neuron, {gtype, train, spikes, fitness=0}).
  
  parse_args([Fname, Sdm, Mutprob, Mutrate, Xover_type| _]) ->
      [atom_to_list(Fname), utils:atom_append(Sdm, "_fitness"),
       atom_to_float(Mutprob), atom_to_float(Mutrate), Xover_type].
  
  random_genotype_fn(_) ->
      fun () ->
  