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sleeping car 
Car with compartments laid out as small bedrooms.
corridor connection
Device where two cars articulate together; passengers and personnel can pass through to get from one car to the next.
wheelchair
Place with special fittings designed for wheelchairs.
sleeping compartment
Compartment laid out with berths.
linen
Storage for linens needed for the trip, such as towels and sheets.
berth
Sometimes folding bench located in a compartment, for sleeping.
toilet
Compartment equipped with a toilet and a sink.
