,,,,&,,&,,                                          ,,,,,,,,,,
&&&,,,,,,&                                          &&&&&&&&&&
&&,,&&&&,,                                          &&&&&&&&&&
&,,,,&&,,&                                          &&&&&&&&&&
,,&&,,,,,,                                          &&&&&&&&&&
,,,,,&&&&,                   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!        &&&,,&&&&,
,,,,&&&&,,                                          &&,,,,&&,,
&&&,,&&,,&                                          &,,&&,,,,&
&&,,,,,,,,                                          ,,,,,,&&,,
,,,&&&&&&&                                          &&&&&,,,,,
&&,,&&&&&,                                          &&&&,,&&&&
&,,,,&&&,,                                          &&&,,,,&&&