anchor.diff:  
   %%------------------------------------------------------------------------------
   
  +initialize_ticker() ->
  +  self() ! tick,
  +  progress_initial_padding().
  +
   ticker(Logger) ->
     Logger ! tick,
     receive
  
positive.code: %%------------------------------------------------------------------------------
  
  progress_initial_padding() ->
    to_stderr("~n~n~n~n~n~n",[]).
  
  progress_clear() ->
    delete_lines(4).
  
negative.code:   to_stderr("~c[1A~c[2K\r", [27, 27]),
    delete_lines(N - 1).
  
  progress_print(#logger_state{traces_ssb = SSB} = State) ->
    Line = progress_line(SSB),
    to_stderr("~s~n", [Line]),
    to_stderr("~s~n", [progress_header(SSB)]),
    to_stderr("~s~n", [Line]),
    {Str, _NewState} = progress_content(State),
    to_stderr("~s~n", [Str]).
  
  progress_header(0) ->
    progress_header_common("");
  progress_header(_State) ->
    progress_header_common("|     SSB ").
  