[R] How to fit all possible sub-models in glm

[Todd Steury]

Greetings fellow R-users,

Does anyone know of a way to fit all possible subsets of a global model
under glm? I'm looking for something similar to "regsubsets" (from package
leaps), but that can handle logistic (binomial) regression. I've searched
the archives, books, etc., but have as of yet been unsuccessful. Thanks in
advance for any help/advice.

P.s., I'm fairly new to R, so my apologies if this problem is a simple one
to answer.  
 
Todd D. Steury
Dept. of Biology
Campus Box 1229, 1 Brookings Dr.
Washington University
St. Louis, MO  63130