What is 'Soak Function' in a Washing Machine?

Soak Function is used to dip clothes in detergent water to remove dirt from the clothes. In this function customer need to select soak from a panel

Soak - This function is available with wash timer, In 42 min of washing 27 min is soak and 15 min machine will wash the clothes. 

Firstly, pulsator will rotate for 1 min and then next 4 min machine will be at rest position then again it will rotate for a minute. This function will be repeated throughout the time which was selected by customer for soak.