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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. #£=:¨¨¨¨¨¨
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¨:==££#### 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.            #££==:¨¨¨¨
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¨:===££### 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.                  #£====:¨¨¨
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¨:===££### 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.          ###££===:¨
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¨:=====£££ 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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