anchor.diff:  
   -export([unicode_mode/1]).
   
  +-export([volume_relative_paths/1]).
  +
   -export([tiny_writes/1, tiny_writes_delayed/1,
            large_writes/1, large_writes_delayed/1,
            tiny_reads/1, tiny_reads_ahead/1]).
  
positive.code:     [] = flush(),
      ok.
  
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  
  
  
negative.code: 
  all() -> 
      [unicode, altname, read_write_file, {group, dirs},
       {group, files}, delete, rename, names, volume_relative_paths,
       {group, errors}, {group, compression}, {group, links}, copy,
       delayed_write, read_ahead, segment_read, segment_write,
       ipread, pid2name, interleaved_read_write, otp_5814, otp_10852,
       large_file, large_write, read_line_1, read_line_2, read_line_3,
  