\dots is used in the Usage section of the Rprof manual, but it's not rendered as ... I'm not sure if this should be \ldots, or just written manually with ... Also, I think the Rprof() on the first line is intended to be on the second line? So that the flow looks like Rprof() # start profiling ## some code to be profiled Rprof(NULL) # shut off profiling ## some code NOT to be profiled Rprof(append = TRUE) # turn profiling back on and append output to current file ## some code to be profiled Rprof(NULL) ## ... et cetera ## Now post-process the output as described in Details As it is the first line looks like it's commented out Michael Chirico [[alternative HTML version deleted]]