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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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