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