anchor.diff:  	Range = (End - Start),
   	StartRange = Start + (Range div 3),
   	EndRange = End - (Range div 3),
  -	{ok, IpdrLogDir} = application:get_env(ocs, ipdr_log_dir),
  -	Filename = IpdrLogDir ++ "/ipdr-" ++ ocs_log:iso8601(erlang:system_time(?MILLISECOND)),
  +	Filename = "ipdr-" ++ ocs_log:iso8601(erlang:system_time(?MILLISECOND)),
   	ok = ocs_log:ipdr_log(wlan, Filename, StartRange, EndRange),
   	GetRangeResult = ocs_log:get_range(ocs_acct, StartRange, EndRange),
   	Fstop = fun(E, Acc) when element(6, E) == stop ->
  
positive.code: 				disk_log:close(IpdrLog),
  				Acc
  	end,
  	NumStops = Fchunk(Fchunk, disk_log:chunk(IpdrLog, start), 0) - 2.
  
  get_range() ->
     [{userdata, [{doc, "Get date/time range from log"}]}].
  
negative.code: 			(_, Acc) ->
  				Acc
  	end,
  	lists:foldl(Fstop, 0, GetRangeResult),
  	{ok, IpdrLog} = disk_log:open([{name, make_ref()}, {file, Filename}]),
  	Fchunk = fun(_F, {error, Reason}, _Acc) ->
  				ct:fail(Reason);
  