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The play takes place in "A room" in a house during the course of one day ("Morning", "Afternoon", and "Night"), but the location of the room is unspecified. The furniture in the room, a "desk" and a "machine" used as a telephone intercom, and the bars on the windows, as illustrated by the premiere production photographs, suggests that the room in a domestic house has been converted into an office and that the house functions as a prison (30 ff.) The use of some common English colloquial expressions (e.g., the titular "One for the Road" repeated by Nicolas regarding having another drink) implies that the action could take place in Great Britain or America, or another English-speaking country among "civilised" people.