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