LG LFX21976ST Owner's Manual page 3

* Depending on the model, some of the following functions may not be available.
The water dispenser dispenses fresh, chilled water.
The ice dispenser dispenses cubed and crushed ice.
The Door Alarm function is designed to prevent refrigerator malfunctioning
that could occur if a refrigerator door or freezer drawer remains open. If a
refrigerator door or freezer drawer is left open for more than 60 seconds, a
warning alarm sounds in 30 second intervals.
The Humidity Controlled Crisper is designed to help keep your fruits and
vegetables fresh and crisp. You can control the amount of humidity in the
crisper by adjusting the setting between Low and High.
Glide`N'Serve provides storage space that keeps the compartment colder
than the refrigerator.
It is a convenient place to store sandwiches or meat to be cooked.
Ice production can be increased by approximately 20 percent when the
freezer section is maintained at the coldest temperature for a 24-hour
period.