anchor.diff:          inform_dist const **marginals, size_t n, double base);
   ----
   Compute the multivariate mutual information between a collection of distributions.
  -****
  +
  +[horizontal]
  +Header::
  +    `inform/shannon.h`
  +****
  
positive.code:         double base);
  ----
  Compute the Shannon self-information of an event given some distribution
  ****
  
  ****
  
negative.code:         size_t event_marginal_z, double base);
  ----
  Compute the point-wise conditional mutual information of a combination of events
  
  [horizontal]
  Header::
      `inform/shannon.h`
  ****
  
  ****
  