What is Child Lock and how to activate/deactivate the function in Samsung Washing Machine?

Please note: 
• When Child Lock function is activated, only the Power button works

• The Child Lock function remains on even after the power is turned on and off or after the disconnecting and reconnecting the power cord

Please note:

• The steps will be slightly different for some models

• With Child Lock function on, an alarm will go off and error message (CL,dE) will pop up as soon as the door is opened. Drain will automatically begin after 30 seconds and it cannot be stopped in the middle of the cycle, even if the power is being switched off. If the door is closed before 30 seconds, water will not be drained

• To add more laundry after Child Lock function is set, always remember to clear the feature before proceeding