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¨~=††*£### 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. #££††~¨¨¨¨
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¨~=††*£###                 ££££££££                 ###£*††=~¨
¨¨¨==†*££#                                          #££*†==¨¨¨
¨~=††*£### 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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