A public toilet (also called a bathroom, restroom, latrine, comfort room, powder room, toilet room, washroom, water closet, W.C., public lavatory, lav, convenience) is a room or small building containing one or more toilets and possibly also urinals which is available for use by the general public, or in a broader meaning of “public”, by customers of other services. Public toilets are commonly separated by sex into male and female facilities, although some can be unisex, particularly the smaller or single occupancy types. Increasingly, public toilets incorporate accessible toilets and features to cater for people with disabilities. Public toilets may be unattended or be staffed by a janitor (possibly with a separate room), or attendant, provided by the local authority or the owner of the larger building. In many cultures, it is customary to tip the attendant, while other public toilets may charge a small fee for entrance, sometimes through use of a coin operated turnstile. Some venues such as nightclubs may feature a grooming service provided by an attendant in the room. They are typically found in railway stations, schools, bars, restaurants, nightclubs or filling stations as well as on longer distance public transport vehicles. Portable toilets are often provided at festivals and at temporary events for public use.