.:~†%%#¶¶¶                                          ¶¶¶#%%†~:.
.:~†%%#¶@#                                          #@¶#%%†~:.
....~~~%%¶                                          ¶%%~~~....
.:~†%%#¶¶@                                          @¶¶#%%†~:.
.....:††%#                                          #%††:.....
......~%#@                  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!         #%†~:.....
.:~†%%#¶@#                                          #@¶#%%†~:.
.:~†%%#¶¶@                                          @¶¶#%%†~:.
.:~††%%%%¶                                          ¶%%%%††~:.
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.:~†%%##¶@                                          @¶##%%†~:.
.:~†%%#¶@#                                          #@¶#%%†~:.