This is a test of commonsense. Complete the next sentence:

How to remove a knobset lock
Examine the base of your knob to determine what kind it is.
There are two main types of doorknobs with hidden levers. These hidden levers can be in the form of a thin slot or a pinhole.
Determine which kind of knob you have, because each knob will detach from the door differently. These hidden levers are also called detents.