They grey dot did not bother me as I just turned it off. But now in the TGV the switches are so tiny and close together, so I would like to have the dot back. F1 is / was supposed to do so. Does not do anything now. And I think in the options menu the setting is also missing. Is that true or am I just blind right now?
Thanks CTL(strg)+8 works. Sorry for bothering. Why was I so sure it was on one of the function keys...