anchor.diff:  -define(WRITABLE_DIRECTORY, "/tmp/").
   -define(WRITABLE_FILENAME, "cloudi_service_filesystem_test.txt").
   -define(WRITABLE_FILEPATH, ?WRITABLE_DIRECTORY ?WRITABLE_FILENAME).
  +-define(TIMEOUT, 20000).
  +-define(REFRESH, 50). % ((?TIMEOUT * 2.5) div 1000)
  +-define(REFRESH_STRING, "50").
   
   %%%------------------------------------------------------------------------
   %%% Callback functions from CT
  
positive.code:        <<"attachment; filename=\"ASCII.bin\"">>},
        {<<"content-type">>, <<"application/octet-stream">>},
        {<<"etag">>, ETag},
        {<<"cache-control">>, <<"public,max-age=30">>},
        {<<"expires">>, _},
        {<<"last-modified">>, LastModified},
        {<<"date">>, _},
  
negative.code:        <<"attachment; filename=\"ASCII.bin\"">>},
        {<<"content-type">>, <<"application/octet-stream">>},
        {<<"etag">>, ETag},
        {<<"cache-control">>, <<"public,max-age=" ?REFRESH_STRING>>},
        {<<"expires">>, _},
        {<<"last-modified">>, LastModified},
        {<<"date">>, _},
  