When I get an error from RStudio rather than R, it seems like I usuallly do not get access to the usual suite of R debugging tools like traceback.For example, I recently got a very stubborn "unexpected end of document" error that kept showing up at or near the end of my script, without regard to what came immediately before it. Well, it did not say "Error," but it did throw up a red dot in the left-most column. I know neither how I caused it nor how I made it go away. I am not asking for help with that particular error, since I do not know how to reproduce it, but rather, I am hoping for some general tips on debugging errors that come from the RStudio IDE, or at least, do not come from R.