This reflected ceiling plan (RCP) sample shows the apartment lighting scheme.
"Lighting or illumination is the deliberate 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. ...
Indoor lighting is usually accomplished using light fixtures, and is a key part of interior design." [Lighting. Wikipedia]
The lighting scheme example "Apartment RCP" was created using the ConceptDraw DIAGRAM diagramming and vector drawing software extended with the Reflected Ceiling Plans solution from the Building Plans area of ConceptDraw Solution Park.