.~«\^^^%¶#                                          #¶%^^^\«~.
.~«\^%@¶¶¶                                          ¶¶¶@%^\«~.
.~«\^%@¶##                                          ##¶@%^\«~.
.~«\^%@¶##                                          ##¶@%^\«~.
.~«\^%%%@¶                                          ¶@%%%^\«~.
.~«\^%@¶##                   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!         ##¶@%^\«~.
.~«\^%%%¶#                                          #¶%%%^\«~.
.~«\%@¶###                                          ###¶@%\«~.
.~«\^%@¶##                                          ##¶@%^\«~.
.~«\^%@¶##                                          ##¶@%^\«~.
.~«\^%@¶##                                          ##¶@%^\«~.
.~«\^%@¶##                                          ##¶@%^\«~.