,@,@,,,@,@                                          @@@@@,,@@,
@@,@,,@@,,                                          ,@@@@,@,@,
,@,@,@,@,@                                          ,,@@@,@,@,
@@,@,@,@,@                                          ,@,@@,@,@,
,@,@,@,@,@                                          ,@,,@,@,@,
@@,@,@,@,@                  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!        ,@,@@,@,@,
,@,@,@,@,@                                          ,@,,@,@,@,
@@,@,@,@,@                                          ,@,@@,@,@,
,@,@,@,@,@                                          ,@,,@,@,@,
@@,@,@,@,@                                          ,@,@@,@,@,
,@,@,@,@,@                                          ,@,,@,@,@,
@@,@,@,@,@                                          ,@,@@,@,@,