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