I've attached the guide I have, hopefully it's the one you need.
These parameter listed in the guide could be what you're looking for:
[game]
ScreenshotType=0
(0 = screenshots are saved as TGA, 1 = screenshots are saved as JPG, 2 = screenshots are saved as TGA and JPG)
jpgQuality=1.0 (quality of JPG screenshot. Range 0.0 to 1.0)
[rts]
UseSmartAxis=0 (value 1 enables smart axis)
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