Moving panes

You can change the position of a pane by just dragging and dropping one pane onto another pane. When you drag a pane the following picture will appear in the middle of a drop-on pane:

If you drop a dragged pane onto the middle square the dragged pane and the drop-on one will create together a tabbed window. If you drop the pane on one of the other squares the dragged pane will be placed above, below, to the left, or to the right of the drop-on pane, respectively.