How to change the picture/screen format of Philips TV?

To change the picture/screen format, do the following:

1. Press the 'OPTION' button on the remote control.
2. A QUICK ACCESS menu will be shown on the screen.
3. Press the cursor up/down to select PICTURE FORMAT and press 'OK' button to activate the next screen.
4. Press the cursor up/down to select the picture/screen format that you would like to set to.
5. Press the 'OPTION'button to exit the menu.

Note:
With HD sources, not all picture/screen formats will be made available.