anchor.diff:  
   ann_c_values(Ann, Vs) -> cerl:ann_c_values(Ann, Vs).
   
  +%% General annotation access functions.
   get_ann(Node) -> cerl:get_ann(Node).
   set_ann(Node, Ann) -> cerl:set_ann(Node, Ann).
   
  
positive.code: %% Copyright (c) 2008-2016 Robert Virding
  %%
  %% Licensed under the Apache License, Version 2.0 (the "License");
  %% you may not use this file except in compliance with the License.
  
negative.code: ann_c_case(Ann, E, Cs) ->
      cerl:ann_c_case(Ann, E, Cs).
  
  %% Clause functions.
  ann_c_clause(Ann, Ps, B) ->                     %Default true guard
      cerl:ann_c_clause(Ann, Ps, B).
  
  ann_c_clause(Ann, Ps, G, B) ->
      cerl:ann_c_clause(Ann, Ps, G, B).
  
  %% Expression sequence functions.
  ann_c_seq(Ann, A, B) ->
      cerl:ann_c_seq(Ann, A, B).
  
  