If I start from R (in emacs) a new R batch job using system("R CMD BATCH --no-save --quiet Rin.txt Rout.txt", intern=FALSE, ignore.stderr=TRUE, wait=FALSE, input=NULL) the job runs fine and smooth. However, when, for any reason, I press later ctrl+C in the calling R, it not only kills the loop or whatever in the emacs/R, but it kills me the called batch job, too. Why? Can I avoid that? Best regards Meinhard PS system : MacOS 10.4.9 Intel, R 2.5.0 [[alternative HTML version deleted]]