,,,,,,,,,,                                          ###,,#,,,,
##########                                          ##,,,,,###
##########                                          #,,###,,##
##########                                          ,,,,#,,,,#
##########                                          ,##,,,##,,
,#########                  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!        #####,,,,,
,,####,,##                                          ####,,####
,,,##,,,,#                                          ###,,,,##,
##,,,,##,,                                          ##,,##,,,,
,,,##,,,,#                                          #,,,,,,##,
##,,,,##,,                                          ,,####,,,,
,,,##,,,,#                                          #,,##,,##,