Slider bars in rebuild menu

[ThatDamnSniper]

What exactly is the result of moving the slider bars in the rebuild menu? one is marked "Minimize cuts" on one side and "Balance tree" on the other. And the other bar is marked "Ignore Portals" on one side and "Portals cut all" on the other.

:sniper:

[Aphex]

Take a look here:

http://unreal.gamedesign.net/bspfaq.html