If you want to access these utilities before M.Bravington post them on CRAN they are available on his site: (ftp://ftp.marine.csiro.au/software/bravington/) G?rald Jean Analyste-conseil (statistiques), Actuariat t?lephone : (418) 835-4900 poste (7639) t?lecopieur : (418) 835-6657 courrier ?lectronique: gerald.jean at spgdag.ca "In God we trust all others must bring data" W. Edwards Deming