1#   fullresolution: What resolution to use for fullscreen: original or fixed size (e.g. 1024x768). Use your monitor's maximum resolution for best results.
2#                   Use it together with aspect=true and scaler=none for best results.
3#                   Doesn't work with: output=surface, 16-bit colour games, 16-bit colour scalers, machine=vgaonly, cga composite.
4
5# windowresolution: Scale the window to this size.
6#                   Use it together with aspect=true and scaler=none for best results.
7#                   Doesn't work with: output=surface, 16-bit colour games, 16-bit colour scalers, machine=vgaonly, cga composite.
8
9#           output: What video system to use for output.
10#                   Possible values: surface, overlay, opengl, openglnb, ddraw.
11
12#    aspect: Do aspect correction. Together with output=surface this can slow things down!.
13
14#    scaler: Scaler used to enlarge/enhance low resolution modes. If 'forced' is appended,the scaler will be used even if the result might not be desired.
15#            Every scaler slow things down!
16#            Possible values: none, normal2x, normal3x, advmame2x, advmame3x, advinterp2x, advinterp3x, hq2x, hq3x, 2xsai, super2xsai, supereagle, tv2x, tv3x, rgb2x, rgb3x, scan2x, scan3x.