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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.                  ¨¨¨^=**£#£
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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.         ¨¨¨¨^=**£#
£#£**=^¨¨¨                                          ¨¨¨^=**£#£
#£#£**=^¨¨ 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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#£**=^¨¨¨¨                 ########                 ¨¨¨¨^=**£#
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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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