hi guys, the docuument "Tutorial for Bioconductor's marrayClasses package" is 738 pages -- most of which are lists of numbers. when I type swirl I get > swirl Pre-normalization intensity data: Object of class marrayRaw. Number of arrays: 4 arrays. A) Layout of spots on the array: Array layout: Object of class marrayLayout. . . . D) Notes on intensity data: in the document "swirl" produces a listing of all of the data (which is what takes the 738 pages) bye rob -- Rob Dunne Fax: +61 2 9325 3200 Tel: +61 2 9325 3263 CSIRO Mathematical and Information Sciences +61 2 9325 3100 Locked Bag 17, North Ryde, New South Wales, Australia, 1670 http://matilda.vu.edu.au/~dunne Email: Rob.Dunne@csiro.au Java has certainly revolutionized marketing and litigation.