anchor.diff:  %%
   %% Note: keys and values are currently stored as strings but pattern
   %% matching and list:keysearch will be faster if standard values are
  -%% represented as atoms (but dont turn them all into atoms - as atoms
  +%% represented as atoms (but don't turn them all into atoms - as atoms
   %% aren't GCed)
   %%--------------------------------------------------------------------
   
  
positive.code: %% Returns :
  %%--------------------------------------------------------------------
  test() ->
      %% test to_norm
      %%---------------------------------------------------------------
      %% test regular case, with case insensitivity
      io:format("test: to_norm/1 - 1~n"),
  
negative.code: %%           and Value are stored in a case insensitive manner
  %% Returns : contact_param record()
  %%--------------------------------------------------------------------
  add(ContactParam, Key, Value) when is_record(ContactParam, contact_param), is_list(Key), is_list(Value) ->
      NKey = httpd_util:to_lower(Key),
      NValue = httpd_util:to_lower(Value),
      add2(ContactParam, {NKey, NValue}).
  