Thanks; good idea - but nope. I'd file a report to EasyPlot, but not sure where to do that. Older discussions on this issue note that there is a "persist" option for gnuplot, but I didn't yet see how to pass that to try it. -----Original Message----- My first hunch was that, since the program ends right after plotting, it cleans up the plot window and exits. But trying it on an X11 system, I got a persistent window despite the program exiting. That may be a difference between Unix and Windows child process handling; I don't have a Windows machine handy right now to test, but you could try this: main = do plot Windows $ Data2D [Title "Demo Title"] [] tData _ <- getLine return () If that doesn't fix it, my only guess is there's either a difference between the Unix and Windows versions of gnuplot, or a bug in easyplot's Windows handling.