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