I own a BeoCenter 1 and a lot of the TV channels on my cable are now in 16:9 format.
Unfortunately, the BC1 can't detect the WSS signal and switch to Format 2 automatically.
Thats why I have made a custom button with PictureFormat+digit2+exit.
I have also copied the button and used drag-n-drop to put it on the Stop key. Then each time I press the Channel up button to zap channels, the wide screen function is right beside if the channel turns out to be interesting.
Then I got a button with Dad's seat, (Stand + 6)