toilets as they are more space efficient than toilets (for urination). Urinals in public toilets are common in Western countries but less so in Muslim countries, partly due to Islamic toilet etiquette rules. Urinals for females exist but are rare. Urinals can be with automatic or manual flushing, or without flush water as is the case for waterless urinals. They can be arranged as single sanitary fixtures (with or without privacy walls) or in a trough design without privacy walls. The body posture for users of urinals is specifically the standing position. Compared with urination in a general-purpose toilet, usage is faster and more sanitary because at the urinal there are no fecal germs, no additional doors or locks to touch, and no seat to turn up. A urinal takes less space, is simpler, and consumes less water per flush (or even no water at all) than a flush toilet. Urinal setups can have individual urinals (with or without privacy partitions) or a communal urinal (also called a trough urinal) which is used by multiple men. Lighting Service lighting consisting of windows that run all the way around the outside of the toilet using electric lights behind the windows, to create the illusion of extensive natural light, even when the toilets are underground or otherwise do not have access to natural light. The windows are sometimes made of glass brick, permanently cemented in place. Lighting installed in service tunnels that run around the outside of the toilets provides optimum safety from electrical shock (keeping the lights outside the toilet), hygiene (no cracks or openings), security (no way for vandals to access the light bulbs), and aesthetics (clean architectural lines that maintain a continuity of whatever aesthetic design is present, e.g., the raw industrial urban aesthetic that works well with glass brick). Cisterns (tanks) Older toilets infrequently have service ducts and often in old toilets that have been modernized, the toilet cistern is hidden in a tiled over purpose-built 'box'. Often old toilets still have high-level cisterns in the service ducts. On the outside, the toilet is flushed by a handle (just like an ordinary low-level cistern toilet) although behind the wall this handle activates a chain. Sometimes a long flushing trough is used to allow closets to be flushed repeatedly without waiting for the cistern to refill. This trend of hiding cisterns and fittings behind the walls started in the