Hey Alexey,
thanks for your reply and for telling me your observations!
- my next step will be to try to be able to stop the autotour :-) until now I did not find a way to do it...
- I did not notice that the previous button and the stop autorotation are not working correctly, thanks!
- I wanted the logo to stick out a little bit

- about the too long menu: I have to try to make it anyhow scrollable. I think this was solved somewhere in the forum...
but there are other problems with smaller devices like smartphones. I don't know how to make the menu workable for smartphones. Maybe I will use a completly different menu for smaller devices. But that's one (of many) things I have to learn and read and trial and error...
however, it's always helping a lot to get some feedback!
best regards
mux