What situation can I use Clear Parent Inverse?

I know its meaning;It means that the Origin of the children will be reset to be the origin of the Parent.
What situation can I use Clear Parent Inverse?
Could someone give me an example?

clear parent inverse = clear child… ie. if you had a group of objects parented to another, and you wanted to clear the relationship of one of those objects.
(edit) scratch that: if you have an object with children parented to that and you wanted to sever the relationship of one of those children, then, select the child, the shift + select parent, and clear parent ( inverse ) ( had it backwards )

Thank you,and could you tell me what the difference between Clear Parent and Clear Parent Inverse?