The bar can be placed at all four sides of the Document window, depending on your preference at the time. To move the bar, place the mouse cursor on a position where you can see the bar's white background. The cursor will now take the shape of a four-way arrow. Holding down the mouse button brings up a dotted box showing the outline of the bar, which can now be dragged to the side of the document window where the bar is to be moved to. The new position applies for all document windows and will be updated immediately the mouse button is released.
