What is the 12 Hour Shut-Off feature and how do I disable it?

The 12 Hour Shut-Off feature automatically turns off the oven after 12 hours during baking functions or after 3 hours during a broil function if you forget to turn it off. To disable it, press the BAKE and BROIL HI/LO pads together for 3 seconds until the display shows SF, then press the DELAY START pad twice until the display shows 'no shdn', and press START to activate.