Default: ORGANIZE_PSTOneReductionStep_Version = 1
ORGANIZE_PSTOneReductionStep_Version==1 : points are remove immediately if they are detected to be too close
ORGANIZE_PSTOneReductionStep_Version>=2 : if detected to be too close, points are marked by Y%ind_vol%=0, Y%ind_act%=-1, and Y%ind_OrganizePC(2)%=-1