.....=^^#£                                          £#^^=.....
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.....=†^@#                                          #@^†=.....
.,=†^@#£##                                          ##£#@^†=,.
.,=†^@#£##                                          ##£#@^†=,.
.,=†^@#£##                  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!         £#@^^==,..
.,=†^@#£##                                          ##£#@^†=,.
.,=†^@#£##                                          ##£#@^†=,.
.,=†^@#£##                                          ##£#@^†=,.
......,†@#                                          #@†,......
......=^##                                          ##^=......
.,=†^@#£##                                          ##£#@^†=,.