The method of opening the door with a handle or knob is intuitive and practical. Both the handle and the door knob are elements located on the door leaf that allow the user to open and close the door conveniently.

The process of opening the door with a handle or knob consists of:

1. Grasping a handle or knob: The user grabs a handle or knob that is placed on the door at the correct height.

2. Turning or Turning a Handle or Knob: The user turns or turns a handle or knob downwards or in the opening direction.

3. Lock Mechanism Activation: The action of the handle or knob activates the lock mechanism, which may be a spring or other type of lock.

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

Or if the door knob is not movable, the way to open the door is:

1. Grasping a Knob: The user grips a knob, which can vary in shape and size, usually located on the door leaf.

2. Pulling the knob in the opening direction: The user pulls the knob in the direction in which he wants to open the door.

3. Opening the door: Pulling the knob activates the door opener, allowing the user to freely slide the door leaf and open it.

The method of opening with a handle or knob is intuitive and commonly used in various types of doors, both internal and external. Both the handle and door knob are available in a variety of styles, finishes and shapes to match the aesthetics of the room or building facade.