[R] How can I obtain a boxed sweave output within Latex?

[Albert Sorribas Tello]

This question is about including code and R results in Latex trough
Sweave. It works fine and is of great help. Now may question is how to get
the code and the output computed by R within a frame in Latex.
Does any one have an idea on that. I tried \fbox, etc. but it seems to
have problems with the code chunk generation of Sweave and I ger errors.
I would appreciate any suggestion. I'll writting a statistical book and it
would be very useful to have the R stuff boxed to highligth it.
Thanks for any help.


-- 
Albert Sorribas
Grup de Bioestadística i Biomatemàtica
Departament de Ciències Mèdiques Bàsiques
Institut de Recerca Biomèdica de Lleida (IRBLLEIDA)
Universitat de Lledia
tel: +34 973 702 406
FAX: +34 973 702 426
Home page: http://www.udl.es/Biomath/Group
IRBLLEIDA: www.irblleida.cat