Software and datasets to support 'Modern Applied Statistics with S', fourth edition, by W. N. Venables and B. D. Ripley. Springer, 2002, ISBN 0-387-95457-0. This file documents software changes since the third edition. - Methods for class "surf.ls" contributed by Roger Bivand. - surf.ls and surf.gls now check for x,y,z cols in a data frame given for x. - PP datasets moved from data to ppdata - no longer duplicate topo dataset from MASS - Strauss and SSI are now interruptible - the extractAIC method for "trls" objects was using incorrect edf