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