Hi everybody, here's some info on a brand new little interface feature that you might not notice otherwise. (It's in the development snapshots already.) Many of you probably know already that you can drag-and-drop a datafile with the mouse onto the gretl main window to open it. (gretl formats .gdt or .gdtb, and actually other supported formats as well. If you have the gretl console set to be merged into the main window on the right-hand side, this only works in the left area of the window where the variables' listing appears.) Now when you have a dataset already active and drag-and-drop another file onto gretl, appending the new datafile contents to the old dataset is also possible. Of course, in such a situation gretl cannot know by itself what exactly you want, so a dialog window will pop up asking you for your choice: open as new dataset or append to the old one? The type of action directly corresponds to gretl's commands 'append' and 'join'. As you may know, 'append' is easier but 'join' is more general and powerful. (Are animated GIFs actually supported on this mailing list? Maybe this would be a good case to prepare and attach one, showing the dragging and dropping....) cheers sven