FP, PP, GB - Full Press, Public Press (only), and Gunboat (no press)
PPSC, WTA - Points Per Supply Center, Winner Takes All
Anon, Non-anon, Semi-anon - Anonymous as in no one even knows who signed up except maybe the porganizer, non-anonumous as in you can see who is who, and semi-anonymous where you know who all signed up, but not what nation they are.
Those are the biggest ones.
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Leftist Weirdies 
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