anchor.diff:  
   
   %%--------------------------------------------------------------------
  -%% @doc Escapes all javascript - sensitive characters.
  +%% @doc Returns a formatted string.
   %% @end
   %%--------------------------------------------------------------------
   -spec format(Format :: string(), Args :: [term()]) -> list().
  
positive.code: 
  
  %%--------------------------------------------------------------------
  %% @doc Escapes all javascript - sensitive characters.
  %% @end
  %%--------------------------------------------------------------------
  -spec format_bin(Format :: string(), Args :: [term()]) -> binary().
  format_bin(Format, Args) ->
      to_binary(format(Format, Args)).
  
  
  %%--------------------------------------------------------------------
  
negative.code: -export([unicode_list_to_binary/1, binary_to_unicode_list/1]).
  
  % String formatting
  -export([format/2, format_bin/2, format_byte_size/1]).
  
  -export([rand_hex/1]).
  
  