Hi Bastian, thanks, feel free to adopt it / salvage it / whatever you feel like doing with it.
regards Norbert -- PREINING Norbert https://www.preining.info Mercari Inc. + IFMGA Guide + TU Wien + TeX Live GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13