@,@,,@@@@,                                          ,@,@,@@,,,
@,@,@,@@@,                                          ,@,@,,@,,@
@,@,@,,@@,                                          ,@,@,@@,@,
@,@,@,@,@,                                          ,@,@,,@,@,
@,@,@,@,@,                                          ,@,@,@@,@,
@,@,@,@,@,                  RAILS                   ,@,@,,@,@,
@,@,@,@,@,                                          ,@,@,@@,@,
@,@,@,@,@,                                          ,@,@,,@,@,
@,@,@,@,@, @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ ,@,@,@@,@,
@,@,@,@,@,                                          ,@,@,,@,@,
@,@,@,@,@, @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ ,@,@,@@,@,
@,@,@,@,@,                                          ,@,@,,@,@,
@,@,@,@,@,                                          ,@,@,@@,@,
@,@,@,@,@, TRAINS  ARE  SO  CONSTRUCTED  THAT  THEY ,@,@,,@,@,
@,@,@,@,@, HAVE TO FOLLOW  A SET PATH. THIS PATH IS ,@,@,@@,@,
@,@,@,@,@, CALLED A  "RAILWAY", WHICH  IS COMPRISED ,@,@,,@,@,
@,@,@,@,@, OF TWO METAL RAILS, HENCE  ITS NICKNAME. ,@,@,@@,@,
@,@,@,@,@,                                          ,@,@,,@,@,
@,@,@,@,@, BECAUSE THE  LOW  FRICTION  BETWEEN  THE ,@,@,@@,@,
@,@,@,@,@, WHEELS OF THE TRAIN AND THE  RAIL METAL, ,@,@,,@,@,
@,@,@,@,@, THERE  ARE  LIMITS FOR HOW ACUTE A CURVE ,@,@,@@,@,
@,@,@,@,@, CAN  BE, AND EVEN  MORE  SO FOR HOW MUCH ,@,@,,@,@,
@,@,@,@,@, THE  GROUND  UNDER  THE   RAILS  CAN  BE ,@,@,@@,@,
@,@,@,@,@, SLOPED. THUS A RAILWAY IS OFTEN  NOT LED ,@,@,,@,@,
@,@,@,@,@, ON TOP OF HILLS, RATHER THROUGH THEM  IN ,@,@,@@,@,
@,@,@,@,@, TUNNELS  (IF   THEY   ARE   LARGE),   OR ,@,@,,@,@,
@,@,@,@,@,            ARTIFICIAL CHASMS.            ,@,@,@@,@,
@,@,@,@,@,                                          ,@,@,,@,@,
@,@,@,@,@, THERE  WILL  BE TREES ON THE SIDE OF THE ,@,@,@@,@,
@,@,@,@,@, RAILS, BUT NOT  TOO CLOSE, OR THEY  WILL ,@,@,,@,@,
@,@,@,@,@, BE  CUT DOWN  BY THE  RAILWAY  JANITORS. ,@,@,@@,@,
@,@,@,@,@, THERE  WILL BE  PLAINS,  AND  BODIES  OF ,@,@,,@,@,
@,@,@,@,@,                  WATER.                  ,@,@,@@,@,
@,@,@,@,@,                                          ,@,@,,@,@,
@,@,@,@,@, TRAINS  GO  BY DAY AND  BY NIGHT.  ALONG ,@,@,@@,@,
@,@,@,@,@,      THE WAY, THERE IS INFORMATION       ,@,@,,@,@,
@,@,@,@,@, SCATTERED, OFTEN PUT  ON  TOP  OF POLES, ,@,@,@@,@,
@,@,@,@,@, TO BE INTERPRETED BY THE TRAIN  DRIVERS. ,@,@,,@,@,
@,@,@,@,@, DIFFERENT  PARTS  OF  THE  RAILWAY  HAVE ,@,@,@@,@,
@,@,@,@,@,          DIFFERENT SPEED LIMITS.         ,@,@,,@,@,
@,@,@,@,@,                                          ,@,@,@@,@,
@,@,@,@,@, SOMETIMES,  TRAINS HAVE TO STOP AND WAIT ,@,@,,@,@,
@,@,@,@,@, FOR SOMETHING  TO HAPPEN, FAR AWAY. THIS ,@,@,@@,@,
@,@,@,@,@, IS  SIGNALED BY  RED  OR  GREEN  LIGHTS. ,@,@,,@,@,
@,@,@,@,@,                                          ,@,@,@@,@,
@,@,@,@,@,                 @@@@@@@@                 ,@,@,,@,@,
@,@,@,@,@,                                          ,@,@,@@,@,
@,@,@,@,@, MANY PEOPLE FOLLOW  THE RAILS  BY  FOOT. ,@,@,,@,@,
@,@,@,@,@, OFTEN THIS  PROVES  TO  BE  THE  SHORTER ,@,@,@@,@,
@,@,@,@,@, PATH BETWEEN  TWO POINTS.  HOWEVER  THIS ,@,@,,@,@,
@,@,@,@,@, IS   FROWNED  UPON,  AND  VERY  IMPOLITE ,@,@,@@,@,
@,@,@,@,@,         TOWARD THE TRAIN DRIVERS!        ,@,@,,@,@,
@,@,@,@,@,                                          ,@,@,@@,@,
@,@,@,@,@,                                          ,@,@,,@,@,
@,@,@,@,@,                                          ,@,@,@@,@,
@,@,@,@,@,                                          ,@,@,,@,@,
@,@,@,@,@,                                          ,@,@,@@,@,
@,@,@,@,@,                                          ,@,@,,@,@,