.^«««**$$#                                          #$$**«««^.
.^«**$@###                                          ###@$**«^.
.^«**$@###                                          ###@$**«^.
.^«**@####                                          ####@**«^.
.....^**@@                                          @@**^.....
....^**$##                  rails                   ##$**^....
.....^«**@                                          @**«^.....
.^«**$@@@@                                          @@@@$**«^.
.^«**$@### @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ ###@$**«^.
.^«**$@###                                          ###@$**«^.
.....«*@@# @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ #@@*«.....
.^«**$@###                                          ###@$**«^.
...^«****@                                          @****«^...
.^«**$@### trains  are  so  constructed  that  they ###@$**«^.
....^***$@ have  to follow a set path. this path is @$***^....
...^«*$@@# called a "railway",  which  is comprised #@@$*«^...
.^«**$@### of two metal  rails, hence its nickname. ###@$**«^.
.^«**$@###                                          ###@$**«^.
.^«****@## 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. @**«^^....
.^«**$@###                                          ###@$**«^.
.^«**$@@##                 @@@@@@@@                 ##@@$**«^.
.^«**$@###                                          ###@$**«^.
.^«**$@@## many people follow  the  rails  by foot. ##@@$**«^.
.....«*$@@ often  this  proves  to  be  the shorter @@$*«.....
.^^^***$@# path between  two  points. however  this #@$***^^^.
.^«**$@### is  frowned  upon,   and  very  impolite ###@$**«^.
....^^*$@#         toward the train drivers!        #@$*^^....
.^«**$@###                                          ###@$**«^.
.^«**$@###                                          ###@$**«^.
.^«**$@###                                          ###@$**«^.
.....^**$@                                          @$**^.....
.^«**$@###                                          ###@$**«^.
.^«««*$$$@                                          @$$$*«««^.