:bounds setting not documented

[barnaclebarnes]

I want to set up 4 windows that are tiled rather than overlapping on my screen. Looking through the docs for creating a new window you can set the following:

:window => [:bounds, :visible, :miniaturized],

:bounds may do what I want but it is undocumented. Is there any way to do what I want (set WxH and top left of a window)? In any case :bounds should be documented so people know what they can set this to.