Lighting is the use of light to achieve a practical or aesthetic effect. Lighting includes the use of both artificial light sources like lamps and light fixtures, as well as natural illumination by capturing daylight. Daylighting (using windows, skylights, or light shelves) is sometimes used as the main source of light during daytime in buildings. This can save energy in place of using artificial lighting, which represents a major component of energy consumption in buildings. Proper lighting can enhance task performance, improve the appearance of an area, or have positive psychological effects on occupants. Lighting is classified by how the light is created and distributed: direct lighting, indirect lighting, and general lighting. Direct lighting uses focused light sources to light a space directly. Indirect lighting creates a diffused light by reflecting the light off of the ceiling or walls. General lighting uses larger, more diffuse light sources to create ambient light in a room. Lighting is an important part of any interior space. It is important to choose the right type of lighting for each room in order to create the desired effect. Lighting can also be used to highlight certain areas of a room or to create a mood or atmosphere. Different types of lighting can be used to create different effects, from a warm and cozy atmosphere to a bright and intense look. With the right lighting, a space can be inviting and comfortable, while also providing a functional purpose.