Opera defaults to full screen every time it is launched. I don't want it to, but there is - or seems to be - no setting for changing the screen default mode.
Yes, I know I can toggle full screen off and on, but that isn't the point - I don't want it to default to full screen and have to do that each time.
'Opera help' is worse than useless - it just tells us how to toggle between full screen or not. There is nothing about changing the default mode.