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