With no arguments, window puts all displayed models on the screen by changing the scale and position of the view. The orientations of the models are not changed. If a structure has moved out of view, this is an excellent way of making it visible again.
If given an atom-spec as an argument, window will recalculate the view to enclose just those atoms instead of all of the models.
See also: align, center, focus, push/pop, reset, savepos