> Considering tablet users and their way of working without mouse, I guess this
> is somewhat like special-purpose method, not widely used one.

Well, that method works with a tablet as well, since the tablet also functions as a mouse. I guess I should have called it getViewportUnderCursor() to be more exact.

That was added in to make it possible to make a keyboard shortcut that would maximize the viewport the cursor was over when pushing the space bar.

Internally there isn't really anything that is particularly controlled by the viewport under the mouse. A few things pay attention to it for some smaller details, like redrawing that viewport first.

- Michael