"Site Update - May 31, 2011
Duel Updates:
Relaxed spawn system in Duel such that it now looks at 50% of the furthest away spawn choices with a minimum of 3 choices, instead of 40% with a minimum of 2 choices -- reducing the predictability of where a player may re-spawn."

Could someone explain to me how this really works, but in a much simpler language? I have 3 questions:

1- Using the map campgrounds as an example, someone could explain me this better?

I would also like to soon understand how the game interprets a map in relation to spawns. I can say that a map is always divided into 2 parts, where my opponent dies, he will respawn from the very opposite side of where I am?
Or is divided into 4 parts, where my opponent may spawn on the opposite side, both a left and the right side for me, no matter if I'm on the same side of a line tha he can to spawn?

2- I will give a situation: When I frag someone at LG, in campgrounds.
a - Where my opponent could respawn if I stay in place? Near the RA, on the bridge or upper SG (pillars)?
b - If I'm in exactly "lower SG", while I run to RA by stairs, the respawn of my opponent will change? If yes, where probably?
c - What if I'm right in the center arena, at the exact point of the MH, where my opponent could to respawn?

3- And at the time of q3 CPMA or OSP, the spawns were purely random or away from the place of his own death, no matter where the killer is?

Thanks in advance! :)