,^~~=%%%&#                                          #&%%%=~~^,
,,,,^~%%&£                                          £&%%~^,,,,
,^~=%%&£##                                          ##£&%%=~^,
,,,^====%&                                          &%====^,,,
,^~=%%&£##                                          ##£&%%=~^,
,,,,^=%&£#                   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!         ##£&%%=~^,
,^~=%%&£##                                          ##£&%%=~^,
,^~=%%&£##                                          ##£&%%=~^,
,^~=%%&£##                                          ##£&%%=~^,
,,,,^~=%&#                                          #&%=~^,,,,
,^~=%%&£##                                          ##£&%%=~^,
,,,,^=%%%&                                          &%%%=^,,,,