anchor.diff:  
   %% Return a mock LID (only to be used with to_string for now).
   -spec mock(integer()) -> lid().
  +
   mock(Seed) ->
       Seed.
   
  
positive.code: %% If called without a `noparent' argument, "register" the first process.
  %% Return the LID of the newly "registered" process.
  -spec new(pid(), lid() | 'noparent') -> lid().
  new(Pid, Parent) ->
      Lid =
  	case Parent of
  
negative.code: 
  %% Information kept in the NT_LID table
  %%
  %% lid : The logical identifier of a process.
  %% pid : The process identifier of a process.
  %% nch : The number of processes spawned by this process.
  -record(info, {lid :: lid(),
  	       pid :: pid(),
  	       nch :: non_neg_integer()}).
  
  %% Record element positions, only to be used by ets:update_element/3.
  -define(POS_LID, 2).
  -define(POS_PID, 3).
  -define(POS_NCH, 4).
  