The Oven Vent
Hot air and moisture escape from the oven through a vent under the right rear surface unit. You can cook on the unit, or keep food warm on it while the oven is on.
Burn Hazard
If you leave a utensil on the right rear surface unit, use potholders when removing it. Pan handles can become hot enough to burn. Plastic utensils left over the vent can melt.
The vent is needed for air circulation. Do not block the vent. Poor baking can result.