|Bottom|: The foremost gets the largest area; other document windows are stacked diagonally on the bottom.
|Right|: The foremost gets the largest area; other document windows are stacked diagonally on the right.
|Vertical|: the windows are postioned left to right; the foremost to the left. Each window height is nearly the height of the screen. Normally, no overlapping is used.
|Horizontal|: windows are postioned front-to-back, from the top of the screen. Each window width is nearly the width of the screen. Normally, no overlapping is used.
|Block Tile|: the windows are tiled with no overlapping.
|Overlay|: each window is diagonally offset from the window beneath.
