What are the available settings choice for this script?

Code:

on @*:join:#:{
  inc -u1 %opsjoin. [ $+ [ $chan ] ]
  if ( %opsjoin. == off ) || ( %opsjoin. == $null ) || ($nick isop #) { return }
  if ($nick == ChanServ || $nick == NickServ || $nick == MemoServ) { return }
  if (%opsjoin. [ $+ [ $chan ] ] >= 3) && (%opsjoin. [ $+ [ $chan ] ] <= 5) {
    .mode $chan +b $wildsite | unset %opsjoin. [ $+ [ $chan ] ] | halt
  }
  set -u3 %OPS. [ $+ [ $chan ] $+ . $+ [ $wildsite ] ] $calc( %OPS. [ $+ [ $chan ] $+ . $+ [ $wildsite ] ] + 1 )
  if ( %OPS. [ $+ [ $chan ] $+ . $+ [ $wildsite ] ] >= 3) {
     if ($nick isop #) return
    .mode $chan +b $wildsite
    .mode $chan +RMm | .timer666 1 60 .mode $chan -RMm
    set %OPS $nick($chan,0)
    unset %fastfilters
    :loop
    inc %fastfilters
    inc -u2 %3dad
    if (%3dad >= 4) halt
    if (%fastfilters > %OPS) halt
    set %temp.filter.kicks $ialchan($wildsite,$chan,%fastfilters).nick
    if (%temp.filter.kicks == $me) { goto loop }
    if (%temp.filter.kicks isop $chan) || (%temp.filter.kicks isvo $chan) { goto loop }
    if (%temp.filter.kicks ison $chan) kick $chan %temp.filter.kicks 10 Join FLood Detected
    goto loop
  }
}