anchor.diff:  format_funcs(Fs, Ctxt) ->
       format_vseq(Fs,
   		"", "",
  -		set_class(Ctxt, def),
  +		Ctxt,
   		fun format_def/2).
   
   format_def({N,V}, Ctxt0) ->
  -    Ctxt1 = add_indent(set_class(Ctxt0, expr), Ctxt0#ctxt.body_indent),
  +    Ctxt1 = add_indent(Ctxt0, Ctxt0#ctxt.body_indent),
       [format(N, Ctxt0),
        " =",
        nl_indent(Ctxt1)
  
positive.code: add_indent(Ctxt, Dx) ->
      Ctxt#ctxt{indent = Ctxt#ctxt.indent + Dx}.
  
  set_class(Ctxt, Class) ->
      Ctxt#ctxt{class = Class}.
  
  core_atom(A) -> io_lib:write_string(atom_to_list(A), $').
  
  
  
negative.code: 
  format_map_pair(Op, K, V, Ctxt0) ->
      Ctxt1 = add_indent(Ctxt0, 1),
      Txt = format(K, Ctxt1),
      Ctxt2 = add_indent(Ctxt0, width(Txt, Ctxt1)),
      [Txt,Op,format(V, Ctxt2)].
  
  