.,~/†%@@@£                                          £@@@%†/~,.
.,~/†%@£##                                          ##£@%†/~,.
.,,,,,/%@@                                          @@%/,,,,,.
.,~/†%@£##                                          ##£@%†/~,.
.,~/†%@£##                                          ##£@%†/~,.
.,~///%@£#                  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!        ##£@%†/~,.
....,/†@@#                                          #@@†/,....
....~///%£                                          £%///~....
...~/††@@@                                          @@@††/~...
.,~/†%@£##                                          ##£@%†/~,.
.....~//%£                                          £%//~.....
.,~/†%%@£#                                          #£@%%†/~,.