graphsheet substitute in R?

I'm using R 2.0.1 in a class I teach, with most students working under 
windows XP.  We have a data frame with the first column containing the 
factor "site," and five water-quality variables at each site.  As one part 
of exploring these data, I'd like the students to run
by(ourdata,site,pairs).
When I try that, however, the pairs plots for the first 10 sites scroll 
past, and I'm left to look at the eleventh only.

 I think that if I did this same thing in s-plus with a graph sheet, each of 
the graphs would be saved to a separate page, and then they could be viewed 
one at a time.  Is there any way to do the equivalent in R?  (Using splom 
from lattice makes the graphs too small.)

 Thanks for any help.  (I am not subscribed to the news mailing list, so I 
would appreciate direct replies.)

 David Parkhurst