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Get used to using your middle mouse button/wheel. The wheel zooms you in, and you go into a "freelook" mode when the middle mousebutton is pressed.
Much faster than going to the edge of the screen, and puts FPS view movement to shame (one hand to look in all directions, target, and kill someone, no need for ~ and arrow keys combined with mouseclicks, or whatever else these FPS wannabe games do).
Thats how people get by in windowed mode in SB.