The method of opening a door with a handle is one of the most common and familiar mechanisms in many types of doors. The handle is an element placed on the door leaf, which acts as a handle, enabling the user to conveniently open and close the door. There are several variants of handles, each of which offers slightly different functionality and aesthetics.

A standard handle consists of two elements: a lever, which we turn, and a lock mechanism. The process of opening the door with the handle consists of: 

1. Pressing or turning the handle: The user presses or turns the handle down or in the opening direction.

2. Lock Mechanism Activation: The action of the handle activates the lock mechanism, which may be spring loaded or otherwise.

3. Opening the door: After activating the lock, the user can freely move the door leaf in the opening direction.

Overall, the way the door opens with the handle is intuitive and easy to understand, making it a popular choice for both homes and public places.