Help System (web edition)

Possible error structures in GENREG are
   ERROR=Normal      (LINK=Identity)
   ERROR=Poisson     (LINK=Log)
   ERROR=Binomial    (LINK=Logit)
   ERROR=Gamma       (LINK=Reciprocal)
The default (canonical) links are in parentheses.

   L = LINK specification 
   R = Logistic regression 
   G = More information on GENREG