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