anchor.diff:  [[inform_pid]]
   [source,c]
   ----
  +inform_pid_lattice *inform_pid(int const *stimulus,
  +        int const *responses, size_t l, size_t n, int bs,
  +        int const *br, inform_error *err);
   ----
   ****
   
  
positive.code: [[inform_conditional_entropy]]
  [source,c]
  ----
  ----
  ****
  
  
negative.code: [[inform_local_entropy_rate]]
  [source,c]
  ----
  double *inform_local_entropy_rate(int const *series, size_t n,
          size_t m, int b, size_t k, double *er, inform_error *err);
  ----
  ****
  
  