Am Mittwoch, 18. Februar 2009 12:38:49 schrieb Horst Schirra: > Do you just want to switch them visible/invisible with one > keystroke/spectrum? in that case the function keys f1-f10) work for the > first 10 spectra (at least on a PC - on Macs it's slightly different). This is exactly what I want, but the shortcuts F1 to F10 aren't defined here. best regards Marco