Kev999
In what sort of situation would this feature be useful?
If you had several sends sent to an effects buss, i.e. reverb or delay, you could tailor what's sent from each send. Cut some lows and highs from a guitar track send, cut the lows at a different frequency but leave the highs on a vocal send, etc. Probably not the best example but I can see where this option could prove useful.
Rocky