anchor.diff:    ,{verbosity, $v, integer,
       io_lib:format("Sets the verbosity level (0-~p). [default: ~p]",
                     [?MAX_VERBOSITY, ?DEFAULT_VERBOSITY]),
  -    "Verbosity decides what is shown on stderr. Messages up to info are"
  -    " *always* shown in the output file. The available levels are the"
  -    " following:~n~n"
  -    "0 <quiet> Nothing is printed~n"
  +    "Verbosity decides what is shown on stderr. Messages up to info are~n"
  +    "always also shown in the output file. The available levels are the~n"
  +    "following:~n~n"
  +    "0 <quiet> Nothing is printed (equivalent to -q)~n"
       "1 <error> Critical, resulting in early termination~n"
  -    "2 <warn>  Non-critical, notifying about weak support for a feature or the"
  -    " use of an option that alters the output~n"
  -    "3 <tip>   Notifying of a suggested refactoring or option to make testing"
  -    " more efficient~n"
  -    "4 <info>  Normal operation messages that can be ignored~n"
  +    "2 <warn>  Non-critical, notifying about weak support for a feature or~n"
  +    "           the use of an option that alters the output~n"
  +    "3 <tip>   Notifying of a suggested refactoring or option to make~n"
  +    "           testing more efficient~n"
  +    "4 <info>  Normal operation messages, can be ignored~n"
       "5 <time>  Timing messages~n"
       "6 <debug> Used only during debugging~n"
       "7 <trace> Everything else"
  
positive.code:       end
    end.
  
  getopt_spec() ->
    getopt_spec(options()).
  
  
negative.code:         [Key, Set, ReasonKey, ReasonValue])
    end.
  
  %%%-----------------------------------------------------------------------------
  
  -spec opt_error(string()) -> no_return().
  
  opt_error(Format) ->
  