Definitions for "FSAA"
Full Screen Anti Aliasing - What is done by videocard to remove the jagged edges in lines. The resulting image is much smoother on the eyes, though performance may suffer.
(Full-Screen Anti-Aliasing) - The role of anti-aliasing in imaging programs is to smooth jagged lines and distribute colors over the palette more equally, thus letting graphical objects blend into each other in a more natural way. Using this technology in 3D games makes for smoother edges (looks less "pixely") and a more natural, less artificial overall look of the screen.
A method used by 3D graphics cards to provide anti-aliasing to all objects in a 3D environment. This acts to smooth out the jagged appearance of edges...