Is it possible to have a horizontal split screen (that is, two files open, one on the left, one on the right at the same time) in Cloud9? If so, how?
Update: Cloud9 now allows splitting multiple and individual files now in many ways and options. Just right-click on any tab and select one of the split pane options, or "Duplicate View" if you want to split the current file. Similar options exist in the "View" menu.