anchor.diff:  %%
   %% %CopyrightBegin%
   %%
  -%% Copyright Ericsson AB 1996-2015. All Rights Reserved.
  +%% Copyright Ericsson AB 1996-2017. All Rights Reserved.
   %%
   %% Licensed under the Apache License, Version 2.0 (the "License");
   %% you may not use this file except in compliance with the License.
  
positive.code:                     | {'record', record()}
                      | {'text', string()}.
  
  -opaque anno() :: location() | [annotation(), ...].
  -type anno_term() :: term().
  
  -type column() :: pos_integer().
  
negative.code: 
  %% Debug: define DEBUG to make sure that annotations are handled as an
  %% opaque type. Note that all abstract code need to be compiled with
  %% DEBUG=true. See also ./erl_pp.erl and ./erl_parse.yrl.
  
  %-define(DEBUG, true).
  
  