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