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1Train routes in the Netherlands — Train routes by timetable numberTrain routes in the Netherlands are identified by numbers. The routes are listed here using the official abbreviations for the station names, see list of stations, with their official abbreviations, and in the… …
2Tree walking automaton — A tree walking automaton (TWA) is a type of finite automaton that deals with tree structures rather than strings.The following article deals with tree walking automata. For a different notion of tree automaton, closely related to regular tree… …
