thank you, luke, that's the solution.
attached an abstraction that demuxes bangs.
nbang [number of bangs]
inlet: bangs
GMX FreeMail: 1 GB Postfach, 5 E-Mail-Adressen, 10 Free SMS. Alle Infos und kostenlose Anmeldung: http://www.gmx.net/de/go/freemail