¨¨§§§¨§§¨¨                                          §§¨¨¨¨¨§¨¨
¨¨§¨¨§§¨§¨                                          ¨¨§¨¨¨¨§§¨
¨¨§§¨§¨§§§                                          §¨§§¨¨¨§¨§
§¨§¨§§§§¨¨                                          §§§¨§¨¨§§§
¨§§§§¨¨¨§¨                                          §¨¨§§§¨§¨¨
¨§¨¨¨§¨¨§§                  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!         ¨¨¨¨§§¨§¨§
§¨¨¨¨¨¨¨§¨                                          §¨¨¨§¨§§§§
¨§¨¨¨¨¨¨§§                                          ¨§¨¨§§§¨¨¨
¨§§¨¨¨¨¨§¨                                          §§§¨§¨¨§¨¨
¨§¨§¨¨¨¨§§                                          ¨¨¨§§§¨§§¨
¨§§§§¨¨¨§¨                                          ¨¨¨§¨¨§§¨§
§§¨¨¨§¨¨§§                                          ¨¨¨§§¨§¨§§