Hi, Is it possible to comment demo() files? I am trying to write demos that have comments, R commands, and R output so that new users will be able to follow along. I have tried readline(), but that returns the readline("...") command statement as well as the output from readline, and the demos are ugly. I have also tried: options(echo = FALSE) print("my comments here") options(echo = TRUE) [some R commands here] options(echo = FALSE) print("more comments") options(echo = TRUE) but options() seems to work only at the beginning of the file. Is there a special command or procedure that I should use? Thanks, Olivia Lau