anchor.diff:       {timetrap, {minutes, 2}}].
   
   all() -> 
  -    [wrap_1].
  +    [wrap_1, compare_list, compare_ets].
   
   %% Check that refs don't wrap around easily.
   wrap_1(Config) when is_list(Config) ->
  
positive.code: loop_ref(R, R, _) -> ok;
  loop_ref(R0, _, N) ->
      loop_ref(R0, make_ref(), N+1).
  
negative.code: 
  -export([all/0, suite/0]).
  -export([wrap_1/1]).
  -export([compare_list/1, compare_ets/1]).
  
  -export([loop_ref/1]).
  
  