anchor.diff:  %
   %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   
  +% https://github.com/erlang/otp/commit/1315c6457e49595fdd3f91693c0506964416c9f0
  +% erts: Add new module 'atomics'
  +
   %% OTP 21.2
   
   -ifdef(have_atomics_new).
  
positive.code: %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  
  -ifdef(have_socket_open).
  test_have_socket_open(_Config) ->
      Releases = ["22", "23"],
  
negative.code: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  
  % https://github.com/erlang/otp/commit/65bd8ade865eebe0d8a3c3210a4e2e9f334e229f
  % erts: Add BIF maps:take/2
  
  % maps:take/2, OTP-19
  has_maps_take_2() ->
  