Today, I did an oral quiz to my econometrics students (about 50 of them) by asking to perform a randomly selected task using gretl. This took a couple of hours and went pretty well but I also had a small feedback regarding the GUI behavior: I noticed that clearing the data set or opening or creating a new data or a session properly closes all the existing windows, which is nice. The various statistical tables, distribution graphs etc windows in the tools menu, however, remain open. I understand that these are not to do with the data but still I think it would be a bit better if those are closed also, with the expectation that the user is probably wanting to starting a fresh analysis so everything should go to the initial case where there is only the gretl main window. I don't know if there is a case for keeping these particular windows open but if everyone is indifferent, IMHO closing all windows in such cases works just a bit better. Cheers Talha -- “Remember not only to say the right thing in the right place, but far more difficult still, to leave unsaid the wrong thing at the tempting moment.” - Benjamin Franklin (1706-1790) --