I want to return to Watch_screen when click on Prepare->Preheat (f.e.)
I made a workaround with new Watch_screen instance, but i think it is incorrect way and it takes time.
or f.e. when I send M502 I need to reboot.
case 9: send_command("M502"); ( reset to defaults )
It works but creating new Watch_screen instance takes time.
How to return to far upper parents correctly?