anchor.diff:  %% @type state() = term().
   -record(state, {partition, pid}).
   
  -%% @type posting() :: {Index::binary(), Field::term(), Term::term(), 
  +%% @type posting() :: {Index::binary(), Field::term(), Term::term(),
   %%                     Value::term(), Properties::term(), Timestamp::Integer}.
   
   %% @spec start(Partition :: integer(), Config :: proplist()) ->
  
positive.code: 
  %% @private
  %% @spec inc(term(), Amt :: integer()) -> term().
  %% 
  %% @doc Increments or decrements an Erlang data type by one
  %%      position. Used during construction of exclusive range searches.
  inc(Term, Amt)  when is_integer(Term) ->
  
negative.code:     merge_index:index(Pid, Postings1).
  
  
  %% @spec lookup_sync(State :: state(), Index::term(), Field::term(), Term::term()) ->
  %%           [{Value::term(), Props::term()}].
  %%
  %% @doc Return a list of matching values stored under the provided
  