¨¨¨¨,~:$%§                                          §%$:~,¨¨¨¨
¨¨¨¨¨,~:$%                                          %$:~,¨¨¨¨¨
¨¨¨¨¨¨,~:$                                          $:~,¨¨¨¨¨¨
¨¨¨¨¨¨¨,~:                                          :~,¨¨¨¨¨¨¨
¨¨¨¨¨¨¨¨,~                                          ~,¨¨¨¨¨¨¨¨
¨¨¨¨¨¨¨¨¨,                  rails                   ,¨¨¨¨¨¨¨¨¨
¨¨¨¨¨¨¨¨¨¨                                          ¨¨¨¨¨¨¨¨¨¨
¨¨¨¨¨¨¨¨¨¨                                          ¨¨¨¨¨¨¨¨¨¨
¨¨¨¨¨¨¨¨¨¨ §§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§ ¨¨¨¨¨¨¨¨¨¨
¨¨¨¨¨¨¨¨¨¨                                          ¨¨¨¨¨¨¨¨¨¨
¨¨¨¨¨¨¨¨¨¨ §§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§ ¨¨¨¨¨¨¨¨¨¨
¨¨¨¨¨¨¨¨¨¨                                          ¨¨¨¨¨¨¨¨¨¨
¨¨¨¨¨¨¨¨¨¨                                          ¨¨¨¨¨¨¨¨¨¨
¨¨¨¨¨¨¨¨¨, trains  are  so  constructed  that  they ,¨¨¨¨¨¨¨¨¨
¨¨¨¨¨¨¨¨,~ have to follow a set path. this  path is ~,¨¨¨¨¨¨¨¨
¨¨¨¨¨¨¨,~: called a  "railway", which is  comprised :~,¨¨¨¨¨¨¨
¨¨¨¨¨¨,~:$ 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!         :~,¨¨¨¨¨¨¨
¨¨¨¨¨¨¨¨,~                                          ~,¨¨¨¨¨¨¨¨
¨¨¨¨¨¨¨¨¨,                                          ,¨¨¨¨¨¨¨¨¨
¨¨¨¨¨¨¨¨¨¨                                          ¨¨¨¨¨¨¨¨¨¨
¨¨¨¨¨¨¨¨¨¨                                          ¨¨¨¨¨¨¨¨¨¨
¨¨¨¨¨¨¨¨¨¨                                          ¨¨¨¨¨¨¨¨¨¨
¨¨¨¨¨¨¨¨¨¨                                          ¨¨¨¨¨¨¨¨¨¨