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