anchor.diff:  -define(REP_MOD, rep).
   
   %%%----------------------------------------------------------------------
  +%%% Types
  +%%%----------------------------------------------------------------------
  +
  +-type mfb() :: {module(), file(), binary()}.
  +
  +%%%----------------------------------------------------------------------
   %%% Instrumentation utilities
   %%%----------------------------------------------------------------------
   
  
positive.code: %% successfully). If no errors are encountered, the file gets instrumented and
  %% compiled. If these actions are successfull, the function returns `{ok, Bin}',
  %% otherwise `error' is returned. No `.beam' files are produced.
  -spec instrument_and_compile([file()]) -> {'ok', [binary()]} | 'error'.
  
  instrument_and_compile(Files) -> instrument_and_compile_aux(Files, []).
  
  
negative.code: 	    error
      end.
  
  -spec load([mfb()]) -> 'ok' | 'error'.
  
  load([]) -> ok;
  load([MFB|Rest]) ->
  